History 1,456 Publishers and publishing 865 Printers 433 Printing 320 Librarians 301 Booksellers and bookselling 220 Book collectors 214 more ... Biography 186 Intellectual life 172 Newspaper publishing 157 Book industries and trade 113 Libraries 109 Book collecting 108 Authors, American 106 Bibliography 100 Publishing 96 Antiquarian booksellers 95 American literature 93 Bibliographers 93 Type designers 83 Type and type-founding 79 Books and reading 74 Early printed books 74 Authors and publishers 69 History and criticism 67 English literature 64 Literature publishing 63 Books 59 Authors, English 58 Employees 56 less ...