I have all of Eleanor Burns books together as well as Fons & Porter...the rest are arranged by what is in them primarily.......log cabin, scrappy, fans or dresden, baby, flannel, animal, and so forth. It seems to work. Each section is identified with an identifying tab, oh they are set on shelves in alpha order. Now the ones that are in baskets laying here and there are not really catagorized yet....have run out of shelves....must buy a new shelf unit......or need to get rid of some of those books...I sometimes feel like a library......I think that will be my new year's resolution.....clear out my sewing cave to a more organized, less clutter place..it is getting a bit out of hand...