[5]=196. Trade and other Catalogues.=--A most useful department, though somewhat difficult to maintain, is a collection of the best and most representative catalogues and price lists of all kinds of commodities. Several points crop up in connection with the work of forming such collections, and the question of policy is here perhaps the most important. Many firms will not give their price lists; and it may be considered invidious to select firms, thereby suggesting favouritism and unfair advertising. In some industries prices, ideas and designs are regarded as trade secrets, and doubtless jealousies might be stirred up in some quarters. But the fact remains that illustrated catalogues of books, furniture, ironmongery, machinery, pottery, art publications, scientific apparatus, etc., are often more generally useful than text-books or special trade and professional journals. Even pattern books of wall-papers, bookbinders’ cloths, leather-work, typefounding and so forth are of immense service to special students, and an effort should be made to strengthen the literary side of suitable subjects by a judicious selection of the best illustrated trade catalogues. [5] The matters thus marked are dealt with more fully under the Division on Reference Work, but are included here for the sake of giving a complete conspectus of the material involved in selection.--ED. =197. Books for the Blind.=--Many libraries now store and circulate books for the blind in the Braille and Moon types, and in this work some of them have been aided by the expert advice and actual donations of special societies interested in the well-being of the blind. There is quite an extensive and rapidly growing literature for the blind in the special raised type required for finger-reading, and a library of a few hundreds of volumes makes quite an imposing show. The question of space will arise in many places, because books for the blind are, as a rule, only embossed on one side of each page, and, owing to this embossing and the size of the type, some books make several thick quarto volumes. No space could, however, be devoted to a more humane or valuable purpose than the storage of books for the blind, and every encouragement and support should be given to the movement; though it would undoubtedly be the most effective method of ministering to the needs of the locality to subscribe for a constantly changing supply of books to one of the institutions for the blind which make a speciality of this kind of work. [6]=198. Maps.=--In addition to all local maps and plans, old and new, sets of the Ordnance and Geological Survey maps on the one-inch scale should be added. Atlases will exist in the reference library as a matter of course, but maps of the United Kingdom suitable for tourists, cyclists, anglers, climbers, etc., should be added as freely as possible.