Some helpful resources for collectors of pre-war cards.
Baseball Advertising Trade Cards, 3rd Edition by Frank Keetz – A catalog of trade cards
Inside T206 by Scot Reader – A comprehensive look at the famous T206 set
Avoid Being Ripped Off
Card Soaking – Information on the practice of soaking cards
Identifying Trimmed Cards – Some tips on how to spot trimmed cards
Type Card Checklist – A look at the various ‘Type cards’ out there