Ivan Falls of the Agrarian Alliance.
The Agrarian Alliance was a member organization of Howard Washburne's League for Brotherhood in the early 1920s. The A.A.'s leader, Ivan Falls, demanded a limit on the size of cities and a return to the soil.
The Agrarian Alliance does not have an entry in Sobel's index. It is mentioned on p. 289 of For Want of a Nail ....
Sobel's source for the Agrarian Alliance is Farley Shaw's Voices of the Great Protest (New York, 1930).