Open back-gear Aermotor, California
The American West (Fiasa), Arizona
FW Axtell Standard, Texas
Butler Double-Gear, Texas
Challenge OK, Texas
Currie, Oklahoma
Currie swallowtail, Texas
Two Curries, Texas
Flint & Walling Star Mill, Texas
Monitor model L vaneless, Texas
Perkins, Texas
Shattuck, Oklahoma
Arizona
Dempster, Arizona
Demster No. 3, Oklahoma
US brand, Oklahoma
Aermotor, Arizona
Woodmanse, Texas
David Bradley, Arizona
Challenge, Arizona
Challenge 27, New Mexico
