I wrote a post about this book in February. Sports Educational was one of the many guides and magazines that included baseball cards.
This one had one for Ryne Sandberg. When I wrote the post I had just the card. Since then I've acquired the entire book. I was curious what the inside looked like.
Sports Educational put out workbooks like this for each of the four major sports. The book contains a series of educational activities The teacher in me wanted to see them. How educational were they? What grade level?
From the looks of this I'd say the book was self-published by the Revels. Today a teacher would make this on their computer and then offer it on Teachers Pay Teachers.
But that means you wouldn't get the baseball cards, so there's something to be said for the old-school paper version.