Much concern has been expressed by librarians, booksellers and publishers at the recently‐proclaimed decision of the H. W. Wilson Company to limit in future the Cumulative Book Index to titles published in the United States and Canada. It may be suggested that those who have followed with interest and practical support the fortunes of this magnificent work, and the other splendid guides published by the Wilson Company, cannot but feel somewhat sardonic at the noisiness of the protest. The Cumulative Book Index has been before British librarians for many years, and the large majority have had the opportunity of handling it, and of subscribing to it; but notwithstanding its patent usefulness and uniqueness the number of libraries subscribing to it runs to a few dozen only. And yet this is a tool without which no reference library can be complete.