All Names
- Hackett, Chauncey, b. 1881
- Hagner, Randall H., b. 1879 (6)
- Hahn Engineering Co.
- Haislip, Earl S.
- Hallet, Étienne Sulpice, 1755-1825 (6)
- Ham, Wm. Deane (2)
- Hamlin, Alfred Dwight Foster, 1855-1926
- Hancock, Walker Kirtland, 1901-1998 (2)
- Harbeson, Hough, Livingston & Larson, Architects
- Hardenbergh, H. J. (Henry Janeway), 1847-1918
- Harding, Clarence L. (Clarence Lowell), b. 1872
- Hardy Holzman Pfeiffer Associates (5)
- Hardy, T. P. (Thomas P.)
- Harley, Ellington & Day
- Harmon, A. C. (Artemas Canfield), b. 1873
- Haro, John C., 1928-
- Harper, J. H.
- Harriman, Florence Jaffray, 1870-1967 (2)
- Harris, Albert L., 1868-1933 (2)
- Harris, Samuel R. (3)
- Harris, Wm. H. (William Harris), 1901-
- Harrison, Hetty Cary, 1871-1943
- Harrison, Mary Lord, 1858-1948
- Harrison, Mitchell (2)
- Harrold, W. H. (William Howieson), 1887-1956
- Harsch, Joseph C. (Joseph Close), 1905-
- Hart, Frederick, 1943- (2)
- Harvey L. Page & Company, Architects
- Haussmann, Wm. M. (William Max), 1906-1988 (3)
- Haviland, John, 1792-1852
- Hawks, John
- Hawley, Hughson, 1850-1936
- Hayes, W. C. (Webb C.), b. 1890
- Hazen, H. H. (Henry Honeyman), b. 1879 (4)
- Heaton, Arthur B., 1875-1951 (585)
- Hébrard, Ernest M. (Ernest Michel), 1866-1933 (2)
- Hechinger Company (2)
- Henderson, J. B. (John Brooks), 1870-1923
- Henderson, John B. (John Brooks), 1826-1913
- Henderson, Mary F. (Mary Foote), 1842-1931
- Hendricks, Genevieve (3)
- Hendricks, Marjory (4)
- Henning, Carl, Dr.
- Henry D. Dagit & Sons (6)
- Henry F. Arnold Associates
- Henry Olmsted & Son
- Herbst, Wm. P. (William Parker), b. 1893
- Heritage, Christian S. (Christian Stanger), 1907-1939
- Herring, Ricardo C., 1947-
- Herring-Hall-Marvin Safe Co.
- Herrmann, A. G. (August G.)
- Herron, Leroy W. (Leroy Whitley), b. 1878
- Hertle, Louis, 1860-1949
- Hill, James G., 1841-1913 (3)
- Hill, W. A. (William Alexander), b. 1875 (17)
- Himes, J. H. (Joseph Hendrix), b. 1885 (2)
- Historic American Buildings Survey
- Historic American Buildings Survey.
- Hitchings & Co.
- Hitz, William, 1872-1935
- Hoban, James, ca. 1762-1831
- Hodgson, Isaac, b. 1826
- Hoffmann, G. H.
- Hogan, Francis Joseph, 1877-1944
- Hoggson Brothers
- Holden, McLaughlin & Associates
- Holton, Jessie Moon, 1866-1951
- Holzman, Malcolm, 1940-
- Hoppin, F. L. V.
- Hopping, D. M. C.
- Hornblower & Marshall (2)
- Hornblower, Joseph C. (Joseph Coerten), 1848-1908
- Hornbostel, Henry, 1867-1961 (2)
- Horning, George D. (George David), b. 1898
- Howard Johnson Co. (2)
- Howard Shaw Associates
- Howard, H. Seymour (Herbert Seymour), 1916-
- Howe, Ch. E. (Charles E.)
- Howe, Walter Bruce, 1879-1954
- Hoxie, R. L. (Richard Leveridge), 1844-1930
- Hunt, Richard Morris, 1828-1895 (2)
- Hunting Davis Company
- Hurst, Hansel (5)
- Hutchison, George W., b. 1886
- Hutton, Addison, 1834-1916 (2)
- Hynning, Clifford J. (Clifford James), 1913- (3)
