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brian parkerIssue 3 of the VCBC has an article by Mark Macrae that breaks up the three years by team, and is especially useful in that it lists variations in the 1910 150 series which are not found elsewhere (have to admit, haven't checked the Obak reference section of the Vintage Carboard site to see if they have it). I believe Beckett and SCD also have errors in their listings, as does Lew Lipset's Encyclopedia of Baseball Cards.
Brian