- Historic Urban Plans (Firm)1
- Historic Urban Plans (Firm) http://id.loc.gov/authorities/names/n81127555 http://viaf.org/viaf/1324451251
- Hitchcock, Edward, 1793-18641
- Hoeing, J. B. (Joseph Bernard), 1855-,Procter, John Robert, 1844-19041
- Hoffman, J. D.1
- Holcroft, John1
- Holland, Samuel, 1728-18011
- Homer Warren and Company.1
- Hood, Washington1
- Horn, Georg, 1620-16701
- Hosokawa, Yasuyoshi1
- Hotchkiss & Mercer1
- Hotchkiss, George Woodward, 1831-1
- Hottenroth, Alfred.1
- Humphreys, A. A. (Andrew Atkinson), 1810-18831
- Huntington, Francis Junius, 1802-18781
- Hurd-Martin Co. (Formerly Hurd-Wheeler Co.)1
- Husson, William M.1
- Hérisson.1
- Hōryū Jōjun1