We will assume that either in the ways indicated, or in some other, the librarian has satisfied himself that he understands what his community needs. How shall he find the books that will satisfy that need, and when they are found (or, still more, when they obtrude themselves on his notice) how shall he know that they are what they claim to be?

In order to find what he wants, the librarian naturally turns at first to such classed bibliographies as he has at hand, including publishers’ trade lists. Unfortunately, books very rapidly become out of print, and if his bibliography or list is even two or three years old he cannot be sure that his work of selection is not in vain. 부천오피 The value of the A.L.A. catalog has been much impaired by its inclusion of out-of-print books, and as, now that it is several years old, the number of these is increasing daily, its use has become more and more vexatious, both to librarians and publishers. It is to be hoped that in the new{20} edition now preparing the out-of-print books will be omitted. Fortunately we now have at our disposal yearly alphabetical lists of in-print books. Such are the index to the Trade list annual and the United States catalog for American editions, and the Index to the reference catalog of current literature for British books.