| Business | Phone |
| David Harris Data Editor 304 C St Ne, Washington 20002 | (202) 546-6653 |
| Engineering-Architecture Libr 200 Pangborn Bldg Fl 2, Washington 20064 | (202) 319-5167 |
| Howard Univ Libraries System 500 Howard Pl Nw # 203, Washington 20059 | (202) 806-7234 |
| John K Mullen Denver Meml Libr 620 Michigan Ave Ne, Washington 20064 | (202) 319-5055 |
| Joseph Mark Lauinger Library 3700 O St Nw, Washington 20057 | (202) 687-7425 |
| Library Of The National Guard 1 Massachusetts Ave Nw, Washington 20001 | (202) 789-0031 |
| Semitics Library Mullen Library # 18, Washington 20064 | (202) 319-5084 |
| Melvin Gelman Library 2130 H St Nw, Washington 20037 | (202) 994-6455 |
| Music Library 4400 Massachusetts Ave Nw, Washington 20016 | (202) 885-3264 |
| Rare Books Special Collections 620 Michigan Ave Ne, Washington 20064 | (202) 319-5091 |
| Music Library Ward Music Bldg # 101, Washington 20064 | (202) 319-5424 |
| Religious Studies Library 314 Mullen Library, Washington 20064 | (202) 319-5088 |
| St Paul's College 3015 4th St Ne, Washington 20017 | (202) 832-6262 |
| Sydney R & Elsa W Mason Libr 1740 Massachusetts Ave Nw, Washington 20036 | (202) 663-5905 |
| Washington College Of Law Libr 4801 Massachusetts Ave Nw #465, Washington 20016 | (202) 744-4350 |
| Us Marine Corps Historical Lib 1254 Charles Morris St Se, Washington 20374 | (202) 433-3447 |
| Trinity College Library 125 Michigan Ave Ne, Washington 20017 | (202) 884-9350 |
| University Of The Dc 4200 Connecticut Ave Nw, Washington 20008 | (202) 274-6370 |