Western Duck Sickness by Jay Laurence Lush, Robert Claude Wright, United States. Bureau of Agricultural Economics, James William Park, William Henry Black, M. A. Yothers, V. F. Tapke, Harvey Leroy Westover, Leander D. Howell, George Bishop Sudworth, Robert Pilson Albert Johnson, Joseph Stuart Caldwell, Edwin Richard Kalmbach, Ned Royce Ellis, Raymond Frank Taylor, Franklin Arthur Coffman, Charles William Rees, Enoch Wesley Nelson, Fenner Satterthwaite Stickney, Foster Hendrickson Benjamin, Lloyd Ancil Spindler, Robert Ellsworth Getty, Thomas Ray Stanton, Tyler Frazier Akers, Walter Huber Meyer, Wightman Wells Garner, William Stuart, Edwin Harrison Milstead, Harry August Schoth, John Henry Zeller, Marsden Robert Brundage, Walter M. Peacock, Arthur Truman Semple