Periodicals I
| Title | Holdings |
| Ideas Para Su Hogar (Espaņol) | Current 6 months |
| ILA Reporter | 1991+ |
| Illinois Documents List | Current year |
| Illinois Game & Fish | Current year |
| Illinois Heritage Association Newsletter | 2002+ |
| Illinois History (online only, eff 2003) | 2001-2002 |
| Illinois Issues | 1993+ |
| Illinois Libraries | 1993+ |
| Illinois Libraries Index | 1979-1989 |
| Illinois Magazine (ceased Aug/Sep 03) | 2002, Dec.-2003, Aug/Sep |
| Illinois Steward | Current 2 years |
| Illustration Index | 1950-1986 |
| In Britain | Current 2 years |
| In These Times | Current 6 months |
| Inc. | 1990+ |
| Info To Go | 1999+ |
| Information Technology and Libraries | 1993+ |
| Information Today | Current year |
| Inside Corel Wordperfect Suite | 1998+ |
| Insight | 1989+ |
| Instructor | 1992+ |
| Instyle | Current year |
| Intellect (continued as USA Today; formerly School & Society) | 1973-1978 |
| International Wildlife (merged with National Wildlife - Apr 2002) | 1974-2002, Apr. |
| Internet Connection | Current + 2 years |
| Investor's Business Daily | Current 3 months |
| Islands | Current year |
| Islands Magazine Index | 1981-1996 |
| Issues in Science & Technology | 1991,Fall+ |
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