| Dallas Morning News (1885-1977) | |
| Dictionary of Literary Biography | |
| Dictionary of National Biography (4th century BC-2002) | |
| Dictionnaire de l'Academie francaise, neuvieme edition | |
| Digital Collections at the Center for Research Libraries | |
| Digital Engineering Library | |
| Digital National Security Archive | |
| Digital Sanborn Maps, 1867-1970 (1867-1970) | |
| Directory of American firms operating in foreign countries | |
| Directory of Open Access Journals | |
| Directory of Open Access Repositories | |
| Dissertations & Theses at The University of Houston | |
| Dissertations & Theses Databases (ProQuest Only) | |
| Documents on British Policy Overseas (1846-1989) | |
| DRAM | |
| Drug Information Full Text | |
