Foreign-matter Trap for Cotton Gins by United States. Department of Agriculture, Lloyd W. Noble, L. V. Wilcox, James William Kimmey, John Robinson Winston, Joseph Benjamin Shepherd, Ralph Corbin Hall, Walter M. Osborn, Charles F. Henderson, A. C. Hull, Charles Michael Merkel, Edgar Blake Hurd, Edwin Edward Drewniak, Fisk Gerhardt, George R. Struble, Gerald N. Franks, Howard Reynolds, James Robert Douglass, Jesse Edward Harmond, L. F. Locke, Leonard M. Klein, Myron Sallee Anderson, United States. Agricultural Research Service. Animal and Poultry Husbandry Research Branch, Victor Friedrich Bruns, Walter Henricks Hodge, William H. Metzler, Anselm Clyde Griffin, Gladys L. Gilpin, Vernon Pollard Moore, Wallace M. Johnson, Irwin Hornstein