[1] The Cardinal shares close proportions with the Monocoupe Model 22 also designed and built in St. Louis in 1927.

The fuselage is constructed with welded steel tubing.

The spar is made of spruce and ribs are basswood with aircraft fabric covering.

[2] The prototype was presented at the 1929 Detroit Air Show.

[3] Data from Greater St.Louis Air & Space MuseumGeneral characteristics Performance