New Massey-Harris Combines: 90SP, 80SP, 70SP, Finest from the First, 1952

For centuries, manufacturers worked to perfect machinery that could combine the three major steps of harvesting grain: reaping, or cutting the crop; threshing to loosen the grain from the chaff; and disposing of the straw while retaining the grain. Massey-Harris, which had developed a self-propelled combine that helped relieve labor shortages during World War II, advertised an improved line of combines for postwar farmers.