- Gardner, John W. (John William), 1912-20023
- Gardner, Mary R.1
- Garlington, Samuel W.1
- Garrison, Curtis Wiswell, 1901-19792
- Gates, Bill, 1955-1
- Gayley, James1
- Gaylord, Eliza48
- Geer, William D., 1906-19761
- General Motors Corporation1
- George, S.C.1
- Gibbons, James, 1834-19211
- Glasser, Carrie1
- Globe Pub. Co. (Boston, Mass.)1
- Globe and Mail (Firm)1
- Goltz, Thomas1
- Gosnell, Harold F. (Harold Foote), 1896-19972
- Grafton, Samuel, 1907-1
- Graham, Frank Porter, 1886-19721
- Graham, Thomas E., Jr.1
- Granger, Lester B. (Lester Blackwell), 1896-19763
- Graubard, Stephen Richards1
- Green, Joseph Coy, 1887-19782
- Greene, W. L.1
- Greenwald, Joseph A.1
- Greenwich House (Organisation)1
- Gregorian, Vartan35
- Greulich, William Walter, 1899-3
- Grossman, Mordecai, 1897-2
- Gulliksen, Harold4
- H.W. Wilson Company5
- HBO Documentary Films1
- Hadsell, Rowena Saeger118
- Haines, Helen E. (Helen Elizabeth), 1872-19611
- Hale, George Ellery, 1868-19381
- Hamburg, David A., 1925-2
- Hamilton-Gordon, Katherine Eliza, 1852–19311
- Hamish Hamilton Ltd.1
- Hansen, Harry, 1884-19775
- Harlow, S. Ralph (Samuel Ralph), 1885-19722
- Harper & Brothers40
- Harris, Abram Lincoln, 1899-19636
- Harrison, Shelby M. (Shelby Millard), 1881-197059
- Hastie, William, 1904-19761
- Hayes, Wayland J., Jr. (Wayland Jackson), 1917-19931
- Hecht, Susanna B.1
- Heddaeus, Ray L.1
- Hedrick Smith Productions1
- Heffner, Richard D.3
- Hepburn, A. Barton (Alonzo Barton), 1846-19221
- Herskovits, Frances S. (Frances Shapiro), 1897-19723
- Herskovits, Melville J. (Melville Jean), 1895-196331
- High/Scope Educational Research Foundation1
- Hill, David Spence, 1873-19512
- Hill, T. Arnold (Thomas Arnold), 1888-19476
- Hinrichs, Albert Ford, 1899-19783
- Hirst, Virginia1
- Home Trust Company4,596
- Hoover, Herbert C.1
- Hopkins, Ernest Martin, 1877-19641
- Hopper, F. F. (Franklin Ferguson), 1878-19505