Filtering by: Source Collection billy ireland collection Remove constraint Source Collection: billy ireland collection Creator ireland, billy, 1880-1935 Remove constraint Creator: ireland, billy, 1880-1935 File Format image/tiff Remove constraint File Format: image/tiff Resource Type image Remove constraint Resource Type: image Subject agricultural productivity Remove constraint Subject: agricultural productivity Subject wallace, henry a., 1888-1965 Remove constraint Subject: wallace, henry a., 1888-1965