Another Boston collector who has been collecting for some time, and who has a valuable collection, is Mr. Fred J. Libbie. Mr. Libbie has a copy of _Warren_, most beautifully bound in crushed levant, which is extra-illustrated by the insertion of rare original plates, autograph letters, portraits, and views. The volume is extended to fully three times its original thickness, and is an elegant specimen of the book-binders’ art, as well as a most valuable storehouse of fine book-plates. Other works on the subject of book-plates are in process of extra-illustration by Mr. Libbie, who is an enthusiastic collector, confining himself to no specialties, but making an excellent collection in all lines. The largest collection of plates is that belonging to Mr. H. E. Deats, of Flemington, N.J. This industrious collector, while a rather new comer, has distanced all the older men, and, being the owner of the bulk of the Mauran collection, has some very fine examples, as well as large numbers, to boast of. Dr. Henry C. Eno, of Saugatuck, Conn., has a large and valuable collection mounted in volumes bound in full levant. We number among our collectors several ladies, and it is earnestly to be hoped that here, as in England, we may have plates designed by lady artists. Probably the earliest lady collector is Mrs. Richard J. Barker, of Warren, R.I., who has several albums filled with good plates, and who has contributed an interesting article on the subject of early American plates to the literature of our topic. Other ladies who are collecting are Miss Helen E. Brainerd, of Columbia College Library; Mrs. C. H. Duhme, of Cincinnati; Mrs. E. M. Gallaudet, of Washington; and Miss Louise Fitz, of Newton Centre, Mass. The mounting and arrangement of plates are vexed questions among collectors. The really satisfactory method has not yet been discovered. Many ways are tried; and experience shows that while one may at different times think he has found the very best way, its disadvantages are sure to appear, and a new method will be looked for. Mr. E. H. Bierstadt, of New York, keeps his collection in large albums constructed for the purpose. The leaves are of double thicknesses of heavy calendered manilla paper. The plates are pasted down on mounts of a stiff white ledger paper, and are then placed in the book, four to the page, by slipping the corners of the mounts into slits cut for the purpose in the page. This allows the easy readjustment, the easy exchange of a poor specimen for a better one, the re-placing of a plate wrongly classed, and the extension of alphabetical arrangement _ad infinitum_. The appearance of the volume is handsome. Mr. Henry Blackwell, of New York, is mounting all his plates on rather large sheets of a stiff paper, of a dark tint, which shows off the plates to good advantage. They are arranged in alphabetical order, and are kept in neat wooden boxes.