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- Hagerstown and Smithburg Turnpike Company. Records
- Haighton, John. Lectures on Midwifery
- Hale, George Ellery. Papers
- Hale, William Gardner. Papers
- Hall, James Parker, Jr. Papers
- Hall, John Vine, Letter
- Hall, Robert A., Jr. Papers
- Hamilton, Earl J. Papers
- Handwritten Medical Instructions
- Hansen, Harry. Papers
- Hanson, J. C. M. (James Christian Meinich). Papers
- Harkins, William D. Papers
- Harper, Paul Vincent. Papers
- Harper, Samuel Northrup. Papers
- Harper, Samuel. Diaries
- Harper, William Rainey. Papers
- Harris, Chauncy D. Papers
- Harris, Gertrude Epstein. Papers
- Harrison, Roland Wendell. Papers
- Hart, Schaffner and Marx Labor Agreement. Records
- Hauser, Philip M.. Papers
- Havighurst, Robert J.. Papers
- Hayner, Norman S.. Papers
- Heaton, David F. Papers
- Heckman, Wallace. Papers
- Heirens, William Case. Newspaper Clippings
- Hektoen, Ludvig. Papers
- Heller, Helen Family. Papers
- Henderson, Charles Richmond. Papers
- Henshaw, Paul Stewart. Papers
- Herrick, James Brian. Papers
- Herrick, Robert. Papers
- Hilberry, Norman. Papers
- Hilliard, Thomas. Papers
- Hitchcock Family. Papers
- Hoebeke, Cornelius. J. Papers
- Hogness, Thorfin R. Papers.
- Holmes, Bayard Taylor. Dementia Praecox
- Holmes, Bayard Taylor. Dementia Praecox and Other Studies
- Holmes, Bayard Taylor. Outline of the Conditions of a Laboratory Building or Buildings for the Laboratories of Cook County, Especially Those of Cook County Hospital
- Holmes, Bayard Taylor. Papers
- Holmes, Bayard Taylor. Papers
- Holmes, Bayard Taylor. Report
- Holmes, Bayard Taylor. The Castor Oil Bean Poison
- Holmes, Bayard Taylor. The Punishment of Carl Carleson
- Holmes, Bayard Taylor. Third Annual Report of Dementia Praecox Studies
- Hooker, George Ellsworth.City Planning, Transportation and Housing. Collection
- Hooper, Frances. Papers
- Horn, Anton Ludwig Ernst. Horn's Specielle Therapeutik
- Horton, Horace Everett, Notes on the Manufacturing of Glucose, Grape Sugars and Starches
- Horwitz, Alexander Philip. Papers
- Hospicio de Pobres. Records
- Hostetter, Charles Linnaeus. Papers
- Howell, Standley. Collection
- Huffaker, Edward C. The Kite : Its Mechanism and Equilibrium
- Huffaker, Edward C. Experiments with Gliding Models Conducted by E.C. Huffaker for Mr. O. Chanute, C.E
- Hughes, Everett Cherrington. Papers
- Hughes, George Warner, Jr. Collection
- Hulbert Family. Papers
- Hulbert, James R. Papers
- Humboldt, Alexander von. Letter
- Huppert, Max Oscar. Papers on the Cause and Treatment of Epilepsy
- Hutchins, Maude Phelps McVeigh. Collection
- Hutchins, Robert M., and Associates. Oral History Interviews
- Hutchinson, Charles L. Postcards
- Hutchinson, William Thomas. Papers
- Hutchison, Clyde A., Jr. Papers
- Hyde Park and Kenwood Interfaith Council. Records
- Hyde Park Garden Fair Commitee. Records
- Hyde Park Historical Society. Collection
- Hyde Park Youth Symphony. Records
- Hyde Park-Kenwood Razed Buildings. Collection