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LymanJamie, the set was issued in the late 1940's by the Sports Exchange Trading Post hobby magazine. They were issued in 12 series. Your Cooper is from Series 1 and your Lyons (trimmed down to the frame line) is from Series 5. They are designated as set W603 in the American Card Catalog.
A gallery for the complete set can be found on the Old Cardboard website at http://www.oldcardboard.com/w/w603/w603.asp?cardsetID=844.