| Abbreviation | Definition |
|---|---|
| QZW8 | Coleman Area Library, Coleman, Michigan Library code |
| QZW9 | Garfield Memorial Library, Clare, Michigan Library code |
| QZWA | Bad Axe Public Library, Bad Axe, Michigan Library code |
| QZWB | Brown City Public Library, Brown City, Michigan Library code |
| R | Rhode Island State Library, Providence, Rhode Island Library Symbol |
| RAC | Rockefeller Archive Center |
| RACL | Regents Academic Committee on Libraries |
| RACL | Rio Abajo Community Library |
| RAD | Rules for Archival Description |
| RADICAL | Reaching Assisting Directing And Inspiring Children At The Library |
| RADL | Roscommon Area District Library |
| RAILS | Reaching Across Illinois Library System |
| RAILS | Reaching Across Illinois Library Systems |
| RALC | Richmond Academic Library Consortium |
| RAUL | Remote Access to University Libraries |
| RBMS | Rare Books and Manuscripts Section |
| RBR | Reserve Books Readings |
| RC | Reference Code |
| RCB | [American] Red Cross Bulletin |
| RCL | Resources for College Libraries |