It would be a virtually impossible task to compare the proofs of these two tremendous publishing achievements. (Especially as a third, to be published by Dodd, Mead, is in the offing). All one can do is to make a general comparison and report as follows. The Macmillan encyclopedia seems to us to be a more enticing book, the type face is easier to read, the layout more appealing, the method of presenting the material provides better reading. On the other hand, the Doubleday cyclopedia is briefer, for quick and ready reference. It cannot compete, however, with the Macmillan volume in scope. I took at random a dozen names and found everyone in the Macmillan volume, and only three in the Doubleday volume. My advice is that you send for the prospectus from each publisher, compare very carefully, and make your decision, as to the needs of your particular market. Large bookshops will probably stock both (and the Dodd, Mead volume when it appears). Small bookshops will find it more profitable to concentrate on one, and if I were making my choice, the Macmillan one would win. Both publishers plan extensive advertising and promotion campaigns. Note prices above.