Bowman launched the first official basketball card set in 1948 and despite only a few cards issued in 1951 by Berk Ross, it wouldn't be until 1957 when another official basketball set was issued by Topps.   Thus, pickings are quite slim for the early days of basketball cards, although it still feels like some of these cards get relatively overlooked by basketball card collectors.  

Key cards include the 1948 Bowman George Mikan Rookie card, 1951 Berk Ross Bob Cousy and 1957 Topps Bill Russell Rookie Card.

Featured Resources:
A History Of Basketball Cards
The 30 Most Valuable Basketball Cards Of All Time
These Rare Vintage Basketball Cards Are Up For Auction