Research notes recorded by Edgar S. McFadden. Research was conducted on barley verities: Success, Hanna, Gold, Minn 105, Odinbrucker, Gatami, Nepal, Hamchen; winter wheat varieties: Turkey, Red Chaff, Kharkov; Rye varieties; and Oats varieties: Ruakura, White Tartarian, Acme, Pelissur, Black Persian. Also included is correspondence between McFadden and J.A. Clark, Assistant Agronomist in charge of Western Wheat Investigation and the U.S. Department of Agriculture, Bureau of Plant Industry.

Research notes recorded by Edgar S. McFadden from 1925 to 1926. Research was conducted on oats varieties: Mark, Richland, Mark, wheat varieties: Acme, Vernal, Marquis, Hope, Webster, Kota, and Quality. Also included is data on smut experiments.

Research notes recorded by Edgar S. McFadden in a U.S. Department of Agriculture Bureau of Plant Industry Agronomic Notes book on field plots. Data is composed of research on winter wheat varieties: Minturki, Proso, Turqhai, Kharkof, Beloglina, Minhardi, and Eureka; spring wheat verities: Quality, Reward, Marquillo, Marquis, Hope, Kota, Reliance, Akrona, Acme, Kubanka, Nodak, Mindum, and Power; barley varieties: White Smyrna, Dryland, New Era, Odessa, Nepal, Vaughn, Glabron, Trebi, Manchuria, Velvet, Oderbrucker, Hamchen, Svanhals; and oat varieties: Cole, 60-day, Richland, Iogold, Edkin, Iowar, Gopher, Fowlds, Minrus, Anthony, Silvermine, Rainbow, and Green Russian.