These sets simply cover the back numbers of what are now grouped in the board's work as "periodicals and society publications"--completed works like "Liber scriptorum," of course, being excepted. Subscriptions to these periodicals and publications as current continuations begin with the date of the receipt of the subscription, so that unless one has been a subscriber from the beginning there will of necessity (because of the limited number of the cards printed) be a break between the last year covered by the "Miscellaneous set" and the beginning of the subscription. The sets have met with a warm welcome from the libraries, and the board is prepared to print cards during 1901 for the following additional sets, providing a sufficient number of orders are received to justify the work: American Academy of Political and Social Science--Annals, 1900 to date; American Economic Association--Economic studies, 1896-97; American Economic Association--Publications, 1887-96; _Bibliographica_, 1895-97; Bureau of American Republics--Publications; Columbia University Studies in History, Economy and Public Law, 1891-96; Johns Hopkins University Studies in History and Political Science, 1883-98; U. S. Geological Survey--Bulletins, 1884-98; U. S. Geological Survey--Monographs, 1882-98; U. S. Geological and Geographical Survey of the Territories--Reports, 1875-90; U. S. Geological and Geographical Survey of the Territories--Miscellaneous publications, 12 nos. These brief statements show concisely the bibliographical work which the Publishing Board has completed and is now carrying on, and for which it needs the continued moral and financial support of the libraries of the Association. _In preparation and under consideration._ Other important work is in active progress. The "Literature of American history," being edited by Mr. Larned, and for which Mr. Iles has so generously donated $10,000, is well along, and may be announced as a fall book. Under Mr. Fletcher's direction work on the second edition of the "A. L. A. index" has advanced rapidly, and the book will be ready for distribution before the end of the year. Mr. Dewey has promised that the long-delayed "Supplement" to the "A. L. A. catalog," being edited, as was the original, by Mrs. Salome Cutler Fairchild, will be out this summer. It is expected that active work on the "Portrait index" will be continued, and that under the editorship of Mr. Lane and Miss Browne the index will be pushed to rapid completion. Among the pieces of valuable work under consideration, on which the board hopes soon to be able to take final and definite action, may be mentioned Mr. Teggart's "Handbook of libraries of the United States," an "Index to library periodicals," a "Bibliography of reference books," cards to current books recommended by the Wisconsin Free Library Commission and the Massachusetts Library Club index to the Massachusetts public documents.