In Brooklyn some collectors of baseball cards got a special treat yesterday.

A baseball truck covered in thousands of baseball rolled into downtown Brooklyn as part of National Baseball Card Day, Saturday. 

Trading card company Topps handed out free baseball cards and also hosted giveaways and trivia contests all about America's favorite pastime.

Topps Marketing Communications Manager Susan Lulgjuraj says "there's a lot of people who collected when they were kids, as they got older maybe they didn't collect as much but now that they're parents themselves they find that it's something to do fun again with their kids." 

Some lucky fans could find an autographed card inside their pack.

To find out where you can get your free pack of cards go to