Deering, see McCormick-Deering
Dehorner, [253]
De Laval cream separator, [19]
De Laval Separator Co., donor, [19]
De Long, Thomas A., donor, [350]
Dentry, Gordon, donor, [256]
Department of Agriculture, see Agriculture, Department of
Deschner, Melvin, donor, [402]
Dierbeck, John J., Jr., [365]
Diesel cultivator, [255]