This second annual encyclopedia summary updates the American Library Association's (ALA) evaluation of 10 sets and analyzes the deletions and additions made to each encyclopedia within the context of each publisher's revision plans. The board looked specifically for significant changes in purpose, arrangement, content style, general quality, and currentness. The current year's analyses cover Academic American Encyclopedia, Collier's Encyclopedia, Compton's Encyclopedia and Fact Index, Encyclopedia Americana, Funk & Wagnalls New Encyclopedia, Merit Students Encyclopedia, The New Book of Knowledge, The New Encyclopaedia Britannica, New Standard Encyclopedia, and The World Book Encyclopedia. A quantitative statistical summary is included which covers: approximate number of entries, number of pages, approximate number of illustrations, consumer price, and school and library prices for 1985 and 1986. (THC)