| C124 | Summit County Library - Main Branch (Frisco) (Frisco Library) |
| C124.nb | Summit County Library - North Branch (Silverthorne) (Silverthorne Library) |
| C124.sb | Summit County Library - South Branch (Breckenridge) (Breckenridge Library) |
| C127 | Colorado Correctional Center Library (at campus George West) |
| C702 | Grand County Library District - Juniper Library at Grand Lake (Marmot Juniper Public Library) |
| C704 | Grand County Library District - Administration |
| C707 | Northwest Colorado BOCES |
| C712 | Colorado Mountain College - CMC - Virtual Library - Dillon (Marmot Dillon Center) |
| C712.ss | Summit School District |
| C714 | Colorado Mountain College - CMC - Virtual Learning Center - Edwards Center (Marmot CMC Vail-Eagle Valley Campus) |
| C716 | Grand County Library District - Granby Branch (Granby Public Library) |
| C720 | Eagle Valley Library District - Gypsum Public Library (Marmot) |
| C722 | East Routt Library District - Bud Werner Memorial Library - Main Library (Marmot Steamboat Springs Public Library) |
| C722.jc | Jackson County Public Library |
| C723 | Steamboat Springs RE-2 School District (Steamboat Springs High School) |
| C724 | Grand County Library District - Hot Sulphur Springs Branch (Marmot Hot Sulphur Springs Public Library) |
| C726 | Colorado Mountain College - CMC - Steamboat Springs Campus Library (Marmot CMC Steamboat) |
| C728 | Eagle Valley Library District - Avon Public Library (Marmot) |
| C730 | Eagle Valley Library District - Eagle Public Library (Marmot) |
| C732 | Vail Public Library (Vail Public Library) |
| C734 | Grand County Library District - Fraser Valley Branch (Marmot Fraser Valley Public Library) |
| C736 | Grand County Library District - Kremmling Branch (Marmot Kremmling Branch Library) |
| C744 | South Routt Library District - Oak Creek Public Library (Oak Creek Public Library) |
| C747 | South Routt Library District - Yampa Public Library (Yampa Public Library) |
| C802 | Northeastern Junior College - Monahan Library |
| C804 | Julesburg Public Library |
| C804.ju | Julesburg RE-1 School District |
| C808 | Sterling Correctional Facility - East and West |
| C814 | Fleming Community Library |
| C816 | Haxtun Public Library |
| C828 | Sterling Public Library |
| C828.vs | Valley RE-1 School District |
| C830 | Heginbotham Public Library |
| C830.hs | Holyoke RE-1J School District |
| C882 | Park County Public Library - Bailey Branch (Bailey Public Library) |
| C896 | Colorado Mountain College - CMC - Timberline Campus Library (Marmot) |
| C932 | Park County Public Library - Fairplay Branch (Fairplay Library) |
| C936 | Clear Creek Library District - Idaho Springs Public Library (Idaho Springs Public Library) |
| C950 | Clear Creek Library District - John Tomay Memorial Library Georgetown (Georgetown Public Library) |
| C952 | Lake County Public Library - Leadville (Leadville Library) |