I have both of these books -- the yellow book on the left is the first book on marbles as a collectible, dates to sometime in the 1960s, before Paul Baumann's first book came out in the 1970s. The orange one on the right is later, early 1980s, and I think it's the first book on marbles that Everett Grist published. He became well-known in the marble-collecting community.
The reliability of the information in them is questionable these days, and in some cases flat-out wrong, especially in the yellow one. But both are interesting to people who are into marble history. The yellow one [i think the names are Carl Tierson (?) and Murray or Morrison or something else that starts with an M] is particularly hard to find. Or at least it was for me.