The Halsam toy company's American Logs construction sets took on John Lloyd Wright's Lincoln Logs in a head-to-head (or cabin-to-cabin) competition from 1934 to 1963. The established Lincoln Logs had rounded cross sections where American Logs had squared-off cross sections which were roughly surfaced to look more like the hand-hewn logs of the American frontier. American Logs forced Lincoln Logs to produce its own square-edged log building sets, American Log Timbers, to compete with Halsam.