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JWThe 1926 Lambert & Butler (Who's Who in Sport) is normally recognized as the Jones rookie. The Hagen is a little more difficult. It could either be a 1926 Spalding, 1926 W512 or any of his three 1927 Churchman's (which are more popular). They also both in the W590 set, but the dates on this set is 1925-31 and it isn't that popular. I look forward to hearing other opinions.
Jason