| Owning | Item | Volume | ||
| Location | Form/Format | Count | Equivalence | Notes |
| McHenry | Volumes | 215,917 | 216,475.55 | |
| Newspapers | 3 | 37.50 | ||
| Multi-media Kits | 1 | 1.00 | ||
| Mono CD-ROM Disks | 1 | 1.00 | ||
| Microprints | 132 | 247.75 | Boxes | |
| Microfiche | 31 | 484.37 | Items are multi-fiche units | |
| Maps | 13 | 7.73 | ||
| Microfilm Reels | 2,279 | 619.30 | ||
| Floppy Disks | 3 | 3.00 | ||
| Media Center | Audiodiscs | 8,421 | 1,830.64 | |
| Science | Volumes | 59,048 | 59,048.00 | |
| Videotapes | 60 | 60.00 | ||
| Serial CD-ROM Disks | 5 | 5.00 | ||
| Multi-media Kits | 2 | 2.00 | ||
| Maps | 4,410 | 3,736.77 | 1,405 sheets; 3,005 volumes | |
| Floppy Disks | 159 | 159.00 | ||
| Compact Discs | 1 | 1.00 | ||
| Special Collections | Volumes | 16,759 | 16,767.38 | |
| Videotapes | 21 | 398.92 | Cartons | |
| UC Archival Manuscripts | 885 | 10,456.93 | 768.8 manuscript units | |
| Personal Manuscripts | 1,359 | 12,428.76 | 1,085.1 manuscript units | |
| Other Pictorial Material | 3 | 9.38 | Wrapped items | |
| Other Archival Material | 1,375 | 8,029.77 | 750.8 manuscript units | |
| Motion Pictures | 5 | 110.00 | Cartons | |
| Microfilm Reels | 197 | 53.53 | ||
| Total | 311,090 | 330,974.28 |