I have many old baseball cards. I have the team cards like from the patriots I have mike patrick who was a punter for them. The card is copyrighted in 1978 by topps chewing gum inc. I have many cards and I was looking for a way to value them all for free. Can you help me?

Beckett is the most used sports price guide out there. For 6 bucks you can get a 1-month membership to their site to check all of your cards. Here's their site: Baseball Sports Cards, Baseball Cards Value and Online Prices Guides at Beckett Media LP

Alternatively, you can typically find an older Beckett Price guide at used book stores for about the same price.