Love the Heilbroner's! Early baseball history and a lot of them are signed by the player! Congrats!!!!I've been trying to get my scanner to work the past few hours. So here's something different. It's part of my Hogan collection. Here's some information on these cards.
Louis Heilbroner was a former manager and executive who founded Heilbroner's Baseball Bureau, the first statistical bureau devoted to baseball. He was the publisher of the Baseball Blue Book, a baseball guide marketed to insiders of the game. At the beginning of their first year of pro ball, each player received an index card with the player's name typed at the top of the card. The player would then complete the small questionairre on the card, describing basic biographical information. The reverse contained blank spaces where the Bureau would update the card each season with current team information.