This copious collection is made up of clear, well-conceived lead sheets. In general, they are melodically accurate and harmonically acceptable. Many of them also contain lyrics. Despite the title, however, the book contains a number of songs which are inconsistent with the idea of its being a jazz source. Such titles as "Jingle-Bell Rock", "Put On A Happy Face" and "Everything's Coming Up Roses" are, at best, gratuitous filler material. Also on the negative side, the lack of double bars and/or other delineations of form may cause less experienced seekers of musical treasures to experience some confusion. Otherwise, this is a valuable and highly economical reference, with tunes costing the buyer only about a half a cent each. My money was well spent.