I stumbled on Baseball Cardpedia and wanted to share it with anyone who might read my blog. It looks as though it's fairly new. Here's the description about it from the website. It might be worth checking out.
"This site serves as a single place for all baseball card documentation including detailed information on sets (checklists, descriptions, insertion ratios, short prints, variations, images and gimmicks), hobby-specific vocabulary, collecting history, notable hobby individuals and much more."