The large ones were Jan-March and the smaller ones were April-Dec. Pictures are shown in the 35-36 ford book. However you can look at http://www.thebrassworks.net/shop/Restored-&-Fabricated-Radiators-Ford-Car-Radiators/c10_59/index.html?osCsid=7c513793d0ffa68c69afddabcc81977b
and get the idea...