I imagine that many who post or view this thread are already familiar with this, but I wanted to take a moment and mention the new book on lineup cards that just came out.
Tom O'Reilly, who I believe is a member of this site wrote the first book ever written on lineup cards.
The book has a ton of photos and stories about cool lineup cards, provides a great overview of the history of lineup cards, and lots of really cool info.
I was interviewed for the book and some of the images come from my collection. Other members of this site were also interviewed and shared parts of their collection.
https://mcfarlandbooks.com/product/the-lineup-card/