I would have each book cover be a specific color according to genre and then I would have them all alphabetized on the shelf by authors last name.
Library drawers from the Perching Post
Seating cards presented in an old library catalog drawer! I've done this before with adorable card catalog themed escort cards!
Recycled Organization - Get Organized: 20 Clever Ideas for Repurposed Storage - Bob Vila. Oh, how I wish that I could find an old library card catalog cabinet!
Love this upcycled library card catalog coffee table.
Library catalog style furniture, love it