Lot of 5 THOMAS COLOR-GLO PLUS Organ Sheet Music Books Volume 1-5 How to Play. Thomas "Color-Glo Plus" Your Musical Library, Volume 1 through 5. Includes 5 books of sheet music for Thomas organ in original box. Box shows moderate wear to the edges and some water damage/staining. Books are in very good condition with some light wear and creasing from use. Please see all photos for more detail on the condition of these items, thanks!