Prussia were moved also to make valuable contributions of documents and statistical material. The Hepworth Dixon collection of English Civil War pamphlets, about five hundred in number, was presented in 1880 by John Jacob Astor III. By 1882 nearly half the library was unrecorded in a catalog except in the shape of brief entries noted in manuscript in interleaved copies of the Cogswell catalog, and cards begun by Brevoort in 1876. A new author catalog was decided on, to include titles of all works received since the first catalog was published, and for this work Charles Alexander Nelson was hired in 1881. Nelson was a Harvard graduate fitted for this new task by service in the Harvard library and by a wide experience in the Boston book trade. The new printed catalog covered up to 1880. It had a fuller quotation of titles than the first one, a more extensive analysis of the contents of collected or comprehensive works, and greater attention to securing full names of authors. It appeared in four volumes, 1886–1888. As a catalog and as a printed book, it was a thoroughly satisfactory piece of work. The entire cost of printing was borne by John Jacob Astor III and amounted to nearly $40,000. With the publication complete, Nelson left the library in 1888. The card catalogs presented a problem of greater complexity. The 1876 card catalog begun by Brevoort recorded a part of the accessions received after 1866. There was one set of cards for the use of the public, and another duplicate set for official use. This was at first mainly a subject or rather a broadly grouped classed catalog. The cards were about 5 inches long by high. For author entries reliance was made upon the interleaved copies of the Cogswell printed catalog and upon a set of author cards – by no means a complete record – for public use. In 1880 when work began upon the new printed catalog this card catalog was closed; its author cards were destroyed when the new catalog was issued, but revision of the subject group continued as occasion offered until after the 1895 consolidation. After 1880, three card catalogs continued until the 1895 consolidation: (1) an official “Bulletin,” on large cards, for works acquired after 1880, mainly an author arrangement; (2) the public “small card” catalog, a dictionary catalog of authors and subjects; (3) the official