During the year of 1925 the Engineering Division at McCook Field opened a design contest for monoplane bombers of the heavy type. A number of designs were submitted by various manufacturers of aircraft, and each design was carefully checked for its aerodynamic and structural features. A discussion arose as to which type of wing was the best to build, a two-spar, a three-spar, or a multi-spar wing. As a result of this discussion, it was decided to build three small-scale models, one of each type for the purpose of static testing and studying the strength characteristics of these structures. This report gives the results of testing the two-spar design.