books.google.com - Part 1, Books, Group 1, v. 23 : Nos. 1-128 (Issued April, 1926 - March, 1927)...http://books.google.com/books/about/Catalog_of_Copyright_Entries_New_Series.html?id=XqIhAQAAIAAJ&utm_source=gb-gplus-shareCatalog of Copyright Entries. New Series