- Kagel, Sam (See: Bridges, Harry 1934)
- Kahlo, Frida (See also: Rivera, Diego)
- Kahn, Edgar
- Kahn, Sam (See: Rossi, Angelo J. 1942)
- Kaiser, Henry J. (See: Spreckels, Alma De Bretteville)
- Kalben, Edward C. (See: Phelan, James)
- Kalloch, Isaac Smith (See also: Mayors & See also: Line Drawings. Biog.)
- Kan, Johnny (See: Christopher, George 1957)
- Kaplan, Joseph
- Karesh, Joseph (See: Samish, Arthur)
- Kaufman, Herbert (See: Gallagher, Dan)
- Kavenaugh, Bill (See: Police. Policemen)
- Kean, J.H. (See: Police. Policemen. McDonald, Bernard J.)
- Kearney, Dennis (See: Line Drawings. Biog.)
- Kearney, Mildred
- Kearns, Martin J. (See: Fire Dept. Chiefs [Battalion] & Fire Dept. Chiefs. Murray, William)
- Kearny, Stephen W. (See: Governors of California. Mexican Rule)
- Keel, Howard (See: Biog. Theater)
- Keeler, Charles (See: Muir, John)
- Keeley, T.G. (See: Police. Policemen. Wennerberg, Carl)
- Keenan, Alexander S.(See: Rossi, Angelo J. 1943)
- Keenan, Frank (See: Biog. Theater)
- Keene, Thomas
- Keene, Thos (See: Cabinet Cards)
- Keesling, Francis V. (See: King, Thomas Starr & Robinson, Elmer E. 1950)
- Keith, William (See: Muir, John)
- Kelham, George
- Kellogg, Sheldon
- Kelly, Alice (See: Cabinet Cards)
- Kelly, Earl Lee (See: Merriam, Frank)
- Kelly, Frank (See: Cabinet Cards)
- Kelly, Frank (See: Fire Dept. Chiefs)
- Kelly, George (See: Police. Policemen)
- Kelly, Grandma (See: Cabinet Cards)
- Kelly, James (See: Police. Policemen)
- Kelly, John J. (See: Police. Policemen)
- Kelly, Martin
- Kelly, Tessie (See: Cabinet Cards)
- Kelly, Wesley (See: Police. Policemen)
- Kemper, George (See: Robinson, Elmer E. 1948)
- Kenealey, W.J. (See: Fire Dept. Captains)
- Kennedy, Charles (See: Robinson, Elmer E. 1952 & 1955)
- Kennedy, John M. (See: Lapham, Roger 1945 Jan.-Mar.)
- Kennedy, Kate
- Kephart, Horace W.
- Kerr, Clark (See: Hearst, Mr. & Mrs. Randolph A.)
- Kerr, WM. J.
- Kerrigan, Frank H. (Judge)
- Kerwias, A.P. (See: Police. Policemen)
- Keyston, George
- Kahlo, Frida (See also: Rivera, Diego)
- Khrushchev, Nikita (See: Biog. Visitors)
- Kibby, Joseph
- Kidd, George W.
- Killion, George (See also: Lurie, Louis)
- Kilpatrick, William (See: Christopher, George 1956)
- King, Carol (See: Bridges, Harry)
- King, Homer S. (See: Rolph, James, Jr. undated & Cabinet Cards. King, H.)
- King, James of William
- King, Martin Luther (See: Biog. Theater)
- King, Thomas Starr
- King, Val (See: Gallagher, Andrew J.)
- Kingman, Dong
- Kip, (Rev.) William Ingraham (See also: Line Drawings. Biog.)
- Kiralty, Trio (See: Biog. Theater)
- Kirby, Georgiane
- Kirby, Wayne (See: Police. Policemen)
- Kirkwood, Robert C. (See: Duckel, Sherman)
- Kissane, Patrick (See: Police. Policemen)
- Kit, Quon
- Kitchen, Jack
- Kittle, William Conrad (See: Police. Policemen)
- Klabunde, E.H., Dr.
- Kleiser, George W. (See: Stackpole, Ralph)
- Klussman, Mrs Hans
- Kneiss, Gilbert (See: Robinson, Elmer E. 1951)
- Knight, Benjamin (See: Byington, Lewis H.)
- Knight, Frederick
- Knight, George A. (See also: Cabinet Cards)
- Knight, Goodwin J. (See also: Governors of California. 1923-1974)
- Knowland, Joseph R.
- Kobart, Ruth (See: Biog. Theater)
- Kogan, Leonid (See: Biog. Theater)
- Kohner, Arthur W. (See: Robinson, Elmer E. 1948)
- Kohnke, Washington I. (See: Robinson, Elmer E. 1949)
- Kolb and Dill (See also: Portraits and stage sets in oversize)
- Kolb, Theo A. (See: Lapham, Roger 1947 July-Aug.)
- Kopp, Quentin L.
- Korton, Karl
- Koshland, Daniel (See: Becker, George H.)
- Kostelanitz, Andre (See: Biog. Theater)
- Koussevitsky, Serge (See also: Monteux, Pierre & See: Biog. Theater)
- Kowalski, Henry I.
- Kranz, Harry T. (See: Robinson, Elmer E. 1953)
- Kraus, L.L. (See: Biog. Theater)
- Krips, Josef (See: Biog. Theater)
- Kronos, Quartet (See: Biog. Theater)
- Kruger, Carl (See: Fire Dept. Chiefs [Assistant] & Fire Dept. Chiefs. Murray, William)
- Kuchel, Thomas H (See: Christopher, George 1956)
- Kuznik, Joseph (See: Spreckels, Claus)
- Kytka, Theodore (See: Police Dept. Scrapbooks. "The Black Hand",P.A.)