A set of three great school music books full of musical memories! All three books have wonderful covers featuring kids singing, dancing, and making music, along with lots of fun pictures scattered throughout the books. They were published by Ginn and Company as part of the Our Singing World series and are all in nice condition with slight aging to the pages and a school stamp inside the front covers. "Singing in Harmony" does have more wear to the corners than the other two books. "Singing in Harmony" and "Singing Together" have copyrights of 1951 and measure 7.5" by 9". "Singing Teen-agers" is slightly larger, measuring 8" by 10", and has a copyright of 1954.