- Jewett, W. P. (William Parker), 1848-19051
- Johnson & Browning1
- Johnston, Alexander Keith, 1804-18711
- Julius Bien & Co., lithographer.1
- Keating, William Hypolitus1
- Kenyon Company1
- King, Harry, (Harold G. R.), draftsman.1
- Kirk, N. M.1
- Kitchin, Thomas, d. 17841
- Kneass & Delleker1
- Kossak, William http://id.loc.gov/authorities/names/n78050672 http://viaf.org/viaf/160301211
- L'Isle, Guillaume de, 1675-17261
- Lake, Thomas A.1
- Lapham, Increase Allen, 1811-18751
- Law, John, 1671-17291
- Lawrence, Dorothea Dix, 1899-19791
- Lee, Thomas Jefferson, 1808-18911
- Leith, C. K. (Charles Kenneth), 1875-19561
- Leverett, Frank, 1859-19431
- Levorsen, L. A. (Levor A.)1