M All issues on microfilm
m Some issues on microfilm
(i) Incomplete
| TITLE | LOCATION | HOLDINGS | |
| OCLC Systems & Services | Spring 1993-1997 | ||
| Occupational Outlook Quarterly | 1980- | ||
| Occupational Outlook Quarterly | RHC | Spring 1981-1987 | |
| Oceanus | Winter 1992/93-1998 | ||
| Office | 1980-October 1993 | ||
| Office Systems | |||
| M | Omni | October 1983-
Winter 1995 |
|
| Online | 1997- | ||
| m | Opera | 1974-1985 | |
| m | Opera News | July 1974-1987;
1995-1999 |
|
| Outdoor Illinois | 1994-1996 | ||
| m | Outdoor Life | 1971- |