Here is a recent article from Sports Collector's Digest that will answer some questions for you., For example, "The first ’61-’62 Fleer Greats series (#1-88) came out in 1961, while the second series (#89-154) hit store shelves in 1962. Both series start with a checklist card and the players, in each case, then appear alphabetically."
If SCD had articles like this years go, I would still be a subscriber. I do subscribe to the free online newsletter and every once in a while they connect like this.
http://www.sportscollectorsdigest.co...m_medium=email