- Hartford Paper Company1
- Hartman, Goldsmith & Co.2
- Harvard Block1
- Harvey County Savings Bank1
- Harway Terrace, Inc.1
- Hassie A. Tillson, Farm Real Estate Agency1
- Hasterlik Bros.1
- Haus and Bresin1
- Hausman and Rosenberg3
- Havana Cigar Factory1
- Havemeyer, Townsend & Co.1
- Havenner Baking Co.1
- Hawley, Folsom & Martin1
- Heatherwood1
- Hecker & Brother1
- Heeren Bros. & Co.1
- Heidelberg, Wolff & Co.1
- Heidrich, Stephen L.2
- Heindsmann, Theodore E.1
- Hej Realty Corp.1
- Heller, Al2
- Helmle and Corbett1
- Helmsley-Spear, Inc.46
- Hemco Realty Corp.1
- Hendrie & Bolthoff Mfg. and Supply Co.1
- Henkels, Charles H.8
- Henkim Realty Corp.1
- Hennessy Company1
- Henry & Andrews1
- Henry & Co.1
- Henry A. Klar Realty13
- Henry Hearne1
- Henry Norman Associates Builders1
- Henry Pettes & Co.1
- Henry Puchall and Co.1
- Henry S. Zook1
- Henry Seibert & Bros.1
- Henry W. Parker1
- Henwin Realty Corp.1
- Herald Publishing Co.1
- Herbert Charles and Co., Inc.311
- Herbert, McLean, Purdy Management Corp.1
- Herman, Milton1
- Hermax Construction, Inc.1
- Herzog, Elias4
- Hess Associates3
- Hess, Paul1
- Hibbard, Spencer, Bartlett & Co.1
- Hidson and Grove Strees Inc.1
- Highway Properties, Inc.1
- Hill Management Co.1
- Hilldale Properties Inc.1
- Hillpark Development Corp.1
- Hillyer and Bell20
- Hilton Builders Corp.1
- Hinckley & Egery Iron Company1
- Hincks & Johnson1
- Hires & Co.1
- Hirsch, Alexander1
- Hirschberg Bros. & Hollander1