| Augustana College | ICY |
| Aurora University | ICA |
| Benedictine University Library | ICG |
| Bradley University | IBA |
| Catholic Theological Union | IDJ |
| Chicago State University | IAA |
| Columbia College | IBZ |
| Concordia University | ICE |
| DePaul University Libraries | IAC |
| Dominican University Library | IBE |
| Eastern Illinois University | IAD |
| Elmhurst College | ICV |
| Governors State University | IAF |
| Greenville College | IAG |
| Illinois Institute of Technology | IAH |
| Illinois Mathematics & Science Academy | JVH |
| Illinois State Library | SPI |
| Illinois State University | IAI |
| Illinois State University Laboratory SD #901 | IS# |
| Illinois Valley Community College | LCX |
| Illinois Wesleyan University | ICO |
| Joliet Junior College Library | AP8 |
| Judson College | IFH |
| Kankakee Community College | ON9 |
| Lake Forest College | IAK |
| Lewis University | ICX |
| Lincoln Christian College and Seminary | JAN |
| Lincoln Land Community College | JBG |
| McKendree College | ICJ |
| Millikin University | ICK |
| National-Louis University | IGB |
| North Central College | ICN |
| Northeastern Illinois University | IAO |
| Northern Illinois University | JNA |
| Oakton Community College | IAP |
| Roosevelt University | IAR |
| School of the Art Institute of Chicago | ILO |
| Southern IL University at Carbondale | SOI |
| Southern IL University at Edwardsville | IAT |
| Southern IL University School of Law | SOL |
| Southern IL Unviersity School of Medicine | IAV |
| St. Xavier University | ICS |
| Trinity Christian College | AQ3 |
| Triton College | IAW |
| University of Illinois at Chicago Main Library | IAY |
| University of Illinois at Springfield | IAS |
| University of Illinois at Urbana/Champaign | UIU |
| University of Illinois College of Medicine (P) | IF6 |
| University of Illinois College of Medicine (R) | IF7 |
| University of Illinois College of Medicine (U) | IF8 |
| Western Illinois University | IAZ |
Arranged By Region:
Arranged By Type of Library:
| Academic | Government | ILCSO | School |
| Business & Law | Health Sciences | Public | Theology |