| Book Sources | |
| 1500-1955 | National Union Catalog, pre-1956 imprints (NUC) |
| Book Trade Bibliographies | |
| 1898-current | Cumulative Book Index |
| 1950-current | Canadiana |
| National Bibliographies | |
| 1500-1955 | National Union Catalog, pre-1956 imprints (NUC) |
| Newspaper Directories | |
| Gale Directory of Publications and Broadcast Media | |
| Newspaper Index Directories | |
| Lathrop Report on Newspaper Indexes | |
| Online Databases | |
| Gale Directory of Publications and Broadcast Media | |
| Report Indexes | |
| 1972-current | Index to Current Urban Documents |
| Serial Catalogs | |
| 1500-1955 | National Union Catalog, pre-1956 imprints (NUC) |
| 1700-1949 | Union List of Serials in Libraries of the United States and Canada |
| Serial Directories | |
| Gale Directory of Publications and Broadcast Media | |
| Union Lists & Catalogs | |
| 1500-1955 | National Union Catalog, pre-1956 imprints (NUC) |
| 1700-1949 | Union List of Serials in Libraries of the United States and Canada |
| 1950-current | New Serial Titles |