Publisher
- H.C. Carey & I. Lea2
- H.M. Gousha Co (Chicago, Ill)2
- H.M. Gousha Company (Chicago)2
- Hammond2
- Harper & Bros.2
- Harper & Brothers (New York)2
- Historic Urban Plans2
- Hondius, Henry2
- House of Commons (London)2
- Hudson Co., (Minneapolis)2
- I. Luffman (London)2
- INROADS, Inc.2
- Illinois State Geological Survey2
- Imprimerie de la République (Paris)2
- Indiana Dept. of Transportation2
- Indiana Univ. Physical Plant2
- Indiana University, Indiana Geological Survey2
- Indiana University?2
- Information Technology and Innovation - Enterprise GIS2
- Interstate Map Company, Engravers and Publishers, Newark NJ2