These cases 1 require our determination whether statements and reports of witnesses and parties procured by an insured party’s insurance carrier were subject to discovery under the provisions of our former Court Rule No 35, § 6 (a) (1945). Since January 1, 1963, discovery such as was sought and ordered in these cases has been subject to the provisions of our new court rules, specifically GrCR 1963, 302.2, 306.2, and 310.

It is quite apparent that the controversies presented to us in these cases arose as a result of our recent decision in Kalamazoo Yellow Cab Company v. Kalamazoo Circuit Judge, 363 Mich 384, in which *408we beld that a written automobile accident report given to the taxicab company by its driver was subject to discovery under Court Rule No 35, § 6, but only for possible use at trial to impeach the driver if called as a witness (the only purpose for which its discovery was requested) unless subsequently shown to be otherwise admissible. In the Kalamazoo Case, as in Berney v. Volk, 341 Mich 647, 649, 650, and Sovereign v. Hart, 363 Mich 32, 37, we clearly construed Court Rule No 35, § 6 (a), to be subject to the limitations of section 6 (b).3 See, also, Tomlinson v. Tomlinson, 338 Mich 274, 278, and Christie v. Board of Regents of University of Michigan, 364 Mich 202, at 230 (dissenting opinion). The issue was presented in the Kalamazoo Case by the taxicab company’s claim in the trial court and before this Court that its driver’s accident report was not subject to discovery because it was not “admissible under the rules of evidence governing trials” as required by section 6 (b). In the cases before us now, the same claim is repeated, but in addition it is also *409claimed that the reports and statements should be immune from discovery by application of the attorney-client privilege (also recognized as a basis for exclusion from discovery by section 6 [b]) to information obtained by insurers for use by attorneys in defending their insureds against claims and by public policy against discovery of an attorney’s “work product.”

Setting aside for the moment the questions of privilege and “work product” policy, and considering first the claim that the documents ordered discovered in these cases were inadmissible in evidence within the meaning of section 6 (b), we see no valid basis for distinguishing the prospective witnesses’ and parties’ statements and reports procured by defendants’ insurance companies and the adjudicated admissibility of the driver’s accident report in the Kalamazoo Case. In the event the prospective witnesses or the parties are called to testify at trial, the contents of their prior extrajudicial statements and reports can be used for their possible impeachment by the opposite party and, consequently, they are not barred from discovery under section 6 (a) by the admissibility requirement of section 6 (b). Plaintiff Chaffee’s statement procured by defendant Stenger’s insurer may not, of course, be used by him for his own impeachment, but the admissibility qualification of section 6 (b) is without the further express or implied limitation that it must be admissible upon the offer of the party seeking its discovery. In other words, the requirement of admissibility is met if the matter sought to be discovered is admissible by any party. That this conclusion accords with the contemplated use of our discovery procedures under Court Rule No 35, § 6, was indicated by the author of Ilonigman’s Michigan Court Rules Annotated, 1959 Pocket Part, pp 77, 78:

*410“Whereas discovery was formerly the rare exception, the new provision makes discovery the rule rather than the exception. This basic change should serve to remold the concept of trial work. It means that there no longer need be any surprises which confront an attorney at the time of trial. It means that each side can have available to it before going into trial practically all of the testimony that is to be used by the opposite side.

“With each side knowing what the other side will be able to show at the trial, there is increased opportunity for a more realistic determination on the part of attorneys and their clients as to the advisability of settlement.”

It is consistent also with fundamental principles implicit in all statutory and rule provisions for liberal discovery. In Hickman v. Taylor (1947), 329 US 495 (67 S Ct 385, 91 L ed 451), the United States supreme court expressed the objective to be served by pretrial discovery as follows, at p 507:

“We agree, of course, that the deposition-discovery rules are to be accorded a broad and liberal treatment. No longer can the time-honored cry of ‘fishing expedition’ serve to preclude a party from inquiring into the facts underlying his opponent’s case. Mutual knowledge of all the relevant facts gathered by both parties is essential to proper litigation. To that end, either party may compel the other to disgorge whatever facts he has in his possession. The deposition-discovery procedure simply advances the stage at which the disclosure can be compelled from the time of trial to the period preceding it, thus reducing the possibility of surprise. But discovery, like all matters of procedure, has ultimate and necessary boundaries.”

The boundaries of Michigan’s discovery procedure are more limited than those of the Federal procedures considered in Hickman v. Taylor, there being *411no admissibility requirement in the Federal rules such as there is in ours, for example. But whatever the differences, the ultimate objective of pretrial discovery is to make available to all parties in advance of trial all relevant facts which might be admitted in evidence at trial. To so narrowly read the admissibility requirement of section 6 -(b) that it would permit discovery only of those matters admissible in evidence by the party seeking discovery would too frequently thwart a litigant’s proper inquiry before trial of “the facts underlying his opponent’s case.”

In further support of the effort to bar discovery of the documents, it is argued that Stenger’s statement and report of loss to his insurance company should be treated as confidential communications from a client to his attorney to be conveyed to the attorney through the insurance company as an intermediary or agent, and thus privileged (within the meaning of section 6 [b]) from discovery. Upon careful examination of the record of the Chaffee case, we find that no proofs were offered in the trial court, by affidavit or otherwise, to show when defendant’s report of loss was made (although defendant’s counsel improperly included in his brief on appeal information outside the record relating to this matter); when and by whom defense counsel was retained; the relationship between defendant’s counsel and his insurance company, including the degree of control each exercised over the activities of the other; or any other proofs pertinent to the claimed agency. Absent such proofs, we cannot find, on this record, that defendant Stenger’s statement and report of loss to his insurance company were *412barred from discovery as privileged communications or otherwise.

It is not claimed that the statements of prospective witnesses other than parties procured by the insurance companies are within the scope of the insureds’ privileged communications with their attorneys, nor could such claim be made. Instead, it is claimed that the bar against their discovery is raised because they represent the attorneys’ “work product” procured by their agents, the insurance companies. Even if we were to assume that the policy which bars an attorney’s work product from an opposing litigant’s inquiry extends to data assembled for the attorney by his agents, these appellants are not entitled to urge this claim in these cases. As we have already noted, the record in the Stenger case does not even permit our determination of the nature of the relationship between defendant’s counsel and his insurance company. The record in Wilson discloses employment of defense counsel by the insurer, not the defendant; that statements were taken by insurance agents even before employment of counsel; and that the insurance company determined which statements to disclose to its trial counsel and which to withhold even from him. Nothing in that record, any more than in Stenger’s permits our finding that counsel engaged the services of insurance agents to assemble for him his “work product.” The judicial policy which protects an attorney’s work product from discovery by his adversary, considered at length in Hickman v. Taylor, supra, may not be invoked in the circumstances of these cases to justify exclusion from discovery of witnesses’ statements obtained, not by counsel personally or even at his request and under his direct supervision, .but rather by the agents of an insurance carrier acting so independently of counsel' that the *413insurer even withheld from counsel subsequent notice that such statements had been taken.

We conclude that neither the attorney-client privilege nor the public policy underlying exclusion of an attorney’s work product is applicable to bar disclosure before trial in these cases of the witnesses’ statements, Stenger’s statement, or his report of loss. Defendants below having failed to show good cause otherwise for denying the requested discovery, as it was their burden to do in accordance with section 6 (b), we hold that the orders for discovery were properly entered and that defendants below are not entitled to their vacation by order of this Court. Accordingly, the order to show cause in the Wilson case is dismissed and the order from which appeal was taken in the Chaffee case is affirmed. The prevailing parties may tax their costs.

(concurring). The thoroughly bandied decision of Hickman v. Taylor, 329 US 495 (67 S Ct 385, 91 L ed 451), decided in 1947, has spawned a curious congeries of judicial confusion.1 Discovery in the text of today’s issue has become an uncertain variable of provincial discretion, differing according to views of judges among the Federal circuits and Federal districts, and differing undeniably in the respective circuits of our State. The reason, as I see it, is that no court of ultimate authority has as yet defined with precision the “work product of the lawyer,” and has then declared the extent to which— if at all — the traditional privacy of that product may be invaded by discovery proceedings.2

*414Hickman does not, of course, control the authority of this Court to declare and apply the common law of Michigan or to provide the discovery procedures of Michigan courts of record. It does, by way of the Court’s conclusion, point up the controversial nature of the issue which has come to us from the Saginaw circuit. That conclusion provides our overture (Hickman at 513, 514):

“We fully appreciate the widespread controversy among the members of the legal profession over the problem raised by this case. It is a problem that rests on what has been one of the most hazy frontiers of the discovery process. * * * When Rule 26 and the other discovery rules were adopted, this court and the members of the bar in general certainly did not believe or contemplate that all the files and mental processes of lawyers were thereby opened to the free scrutiny of their adversaries. And we refuse to interpret the rules at this time so as to reach so harsh and unwarranted a result.”

Hickman and Kalamazoo Yellow Cab Company v. Kalamazoo Circuit Judge, 363 Mich 384, are cited and relied upon by all present counsel. Neither fits directly the specific issue Justice Souris has stated in the first sentence of his opinion. In Hickman the supreme court was asked to expose for the claimant-petitioner certain written statements (of witnesses) attorney Fortenbaugh, “as counsel and agent for defendants” (tug owners and railroad), had obtained “in the course of preparation for possible litigation.” In the Kalamazoo Cab Case this Court dealt exclusively with pretrial discovery of a written accident report made to the defendant employer by its charged-with-negligence employee. An order for *415discovery thereof, upon reasons given in our opinion, was upheld. Here we deal with a plaintiff’s claimed right to discovery of written statements and reports, by witnesses and parties, which legal strangers to the pending suit have obtained. Such strangers are the liability insurers of the respective., defendants. '*

In the Kalamazoo Cab Case the party obtaining and possessing that which the plaintiff discovered was the sued defendant.4 In the Hickman Case the party who had obtained and possessed what the claimant did not discover made up the professional part of the privileged relationship. In the present cases nothing privileged by an attorney-client relation is sought, by discovery. Once that is clear, no problem remains. The circuit judge, not impeded by the rule of privilege, was clothed with discretion to order that counsel for the insurers should produce the statements and reports such insurers had obtained prior to the engagement or involvement of such counsel and prior to their appearance for the sued defendants.

By People v. Pratt, 133 Mich 125 (67 LRA 923), followed in Lindsay v. Lipson, 367 Mich 1, 5, this Court is committed to “a somewhat liberal interpretation” of the common-law right of professional privilege when the necessary relationship exists. We said, in the Pratt Case at 129:

“The privilege is not confined to communications made for the purpose of obtaining advice. It extends to ‘communications made to an attorney in the course of any professional employment, relating to the subject of the employment, and which may be supposed to have been drawn out in consequence of the relation in which the parties stand to each other.’ ”

*416Pratt’s “liberal” rule defies discovery of the lawyer’s “work product.” There remains only the task of definition of. such product; the product which does not of course include any or all of the interpretive or triable, and hence discoverable, subject matter of the litigation; such as the questioned deed or contractual documents, the allegedly mislabeled pills or the allegedly defective king pin the pharmaceutical or automotive defendant has manufactured and marketed, or any like tangible constituting such subject matter or essential part thereof.

Without intending to relate the case or its thrust to the parties in interest before us, I deem it well to repeat at the juncture what was said of the attorney-client relationship in Hightower v. Detroit Edison Co., 262 Mich 1, 9, 10 (86 ALR 509):

“The rights and duties arising out of the relationship of attorney and client are not measured by the yardstick of commercial or trade transactions. The relation is purely personal. The lawyer owes to his client undivided allegiance. There is no place in the relationship for its establishment by a middleman having an interest in the res or control of the procedure. The fact it is so established or initiated makes the attorney so far the agent of the middleman as to charge him with knowledge of all arrangements under which the middleman assumes to act. * * *

“As long as the attorney owes, or deems he owes, to the middleman any duty connected with the plaintiff’s case so that he cannot extend undivided allegiance-to the client, he remains agent of the middleman. If appellant, tona fide, had established with Mrs. Powell the relationship of attorney and client, wholly divorced from Donohue, the case would be different. But he did not. He considered Donohue as well as plaintiff his client in the case.”

*417Consider now the true attorney and client relationship as that relationship has been known throughout development of the common law, and assume for illustration that the client is a newly sued defendant. He picks and engages his lawyer to represent him, and to undertake the defense according to due methods of practice and preparation. The attorney duly assumes such work. In the diligent course thereof, he interviews and obtains written statements of persons who may be callable as witnesses and some who, upon investigation, may not. The statements of the latter, negatively attesting that they did not see, hear, or otherwise acquire admissible knowledge, are taken by the attorney to guard the client against possible lapses or changes of memory by the statement-givers. The attorney obtains and carefully preserves for admissibility copies of documents, photographs, and, probably, bits or items of documentary or physical proof which, if aided by testified identification and relation to the presented issue or issues, may become admissible to support the defense or overcome the plaintiff’s thrust. He briefs and records the substantive and procedural legal aspects of the case, interviews and engages the aid of expert witnesses, and prepares for his own ready use a chronology of memoranda of discovered facts and of their indicatively admissible and timable employment in court. In short, he prepares his client’s case according to the developing needs thereof, and maintains in the preparatory file he has made the very tools by which his personal-to-client duty is performed. That file is the privileged “work product of the lawyer.” It is not the “work product” of a vicariously liable insurer whose relation to its sued insured is contractual rather than professionally personal.

*418I would define that product with foregoing’ severity, the better to guard and protect historic privacy of the relationship it exemplifies. The attorney and his client have the exclusive right to decide at what stage if at all they are to bring forth such product or portions thereof during the trial; the trial as it was and supposedly is known to the common law; the trial that is (in a case properly triable to a jury) preserved as a right by the Constitution. See Cooley, J., in Swart v. Kimball, 43 Mich 443, 448; quoted in Romero v. King, 368 Mich 45, 50, holding the maintained right of jury trial is “the right as it existed before; the right to a trial by jury as it had become known to the previous jurisprudence of the State.” That there may in extreme circumstances be some exception to this is presently immaterial, since the exception will probably prove out as being one of the exceptions the common law has always known.

It is clear that some of the concededly valuable dicta written in Hickman is Michigan-acceptable, and that some is not. See GCR 1963, 306.2. Pointed indeed is the observation of the supreme court (Hickman at 511) that, if the work product of the lawyer should be made “open to opposing counsel on mere demand, much of what is now put down in writing would remain unwritten.” Trial counsel of experience would probably rather memorize and then personally destroy each fresh sheet of the product — as Stonewall Jackson did with each order from Lee — than carry the risk of having an opponent pry through, to any extent by judicial order, their diligently prepared files. Like the prohibition laws, orders to produce parts of such personally assembled product are, if issued, bound to be difficult of enforcement.

The foregoing is submitted to the profession in effort to draw that solid line where the judicial dis*419cretion provided by GCR 1963, 306.2 comes to an end and absolute privilege begins. There is no other way to protect the professional relationship from dilution and ultimate dissolution in the turbulent sea of judicial discretion. A caveat: To be sure, with the new rules now in effect, the attorney who-takes a written statement from some party or witness, and fails then to deliver the statement-giver a copy thereof, probably waives for himself and his client the privilege otherwise enjoyed. That, however, is the apparent extent to which the new rules attempt to modify the professional privilege. Such extent is quite far enough.5

The foregoing convictions recorded, I agree with Justice Souris’ disposition of both cases and with his holding that the statements and reports the respective insurers have obtained are discretionarily discoverable as against their plea of professional privilege. Since those statements and reports were not obtained by counsel, they are not discovery-immune on ground of professional privilege. And it is hardly necessary to add that a possibly related situation is not before us. I refer to the one where the counsel engaged to defend — by the liability insurer- — has himself obtained the sought-to-be-discovered statements and reports.