OPINION OF THE COURT

This appellant has been convicted on several counts and sentenced to concurrent terms of imprisonment for knowing participation in undertakings to defraud in which the mail was used in violation of Section 1341 of Title 18, United States Code. On this appeal it is *148 urged that the record is insufficient to establish that the appellant participated in the scheme with guilty knowledge of its wrongful aspects.

The evidence that a scheme to defraud a number of people existed and was carried out by conduct including the use of the mail is overwhelming. While the appellant is not shown to have been the master mind in the scheme, the record contains substantial evidence of his participation in essential parts of the undertaking and affords adequate basis for concluding that he did so with guilty knowledge.

The judgment will be affirmed.