A Guide to the Pipe Organ by Sandra Soderlund is a brief introduction to the organ for anyone who wants to understand the instrument or to make music on it. The booklet is very useful to beginning students and church organ committees who are trying to make sense of organ mechanisms, terms and jargon, such as "unification," "registration," "stops," "ranks." etc. Both mechanical and electrically controlled instruments are considered. 22 pages, softbound, Soderlund: A Guide to the Pipe Organ Book SSGUIDEPO$5.95