Book excerpt: For librarians and others who guide genealogical researchers, a handbook from one who learned the skill on a sink-or-swim basis as a reference librarian at Brigham Young U. Library in the 1960s; true to his name, he swam. It covers how to help researchers get started, develop collections, use technology to find out about other collections, provide instruction for genealogists, and stay current professionally. Annotation ©2004 Book News, Inc., Portland, OR.