Contents: Introduction --- Collection of Races of “Gossypium Hirsutum” Obtained by Exploration in Mexico and Guatemala --- Cotton Expedition to Guatemala and Mexico (by J. O. Ware) --- Explanation of Table Headings and Key to Codes --- Gossypium Germplasm Collection of Species, Interspecific Hybrids and Primitive Races of G. Hirsutum Maintained at Texas A&M University, College Station, Tex. --- Gossypium Germplasm Collection of Commercial Varieties, Genetically Marked Stocks, and Obsolete Agricultural Varieties Maintained at the Delta Branch Experiment Station, Stoneville, Miss. --- Gossypium Germplasm Collection of G. Barbadense Stocks Maintained at Cotton Research Center, Phoenix, Ariz.
