This is a lot of 3 faux books that were used in the show. I identified one of the books (the orange one) in the Season 5 episode "Map of the Seven Knights" (5.10). It is in the bookshelf of Monroe's uncle, Felix Dietrich (played by Rick Overton) (on the right of the screencap, third shelf from top, second book from right - thanks to screencapped.net for the picture). Still have to find the other books. Additional notes: after a closer look at the screencap, the big green one might be among those under the table.
