Names
- Jones, Keven R.1
- Journal of the Optical Society of America1
- Kahn, Reuben L.1
- Karpinski, Louis Charles, 1878-1956.1
- Karpinski, Louis Charles.1878-1956.1
- Keeley, Joseph1
- Kelleher, Alfred1
- Keller, Geoffrey, 1918-1
- Keller, Kaufman Thuma, 1885-1966.1
- Kellogg, Remington, 1892-1
- Kellogg, Remington, 1893-1
- Kelly, E. Lowell (Everett Lowell), 1905-1986.1
- Kelly, Everett Lowell, 1905-1
- Keniston, Hayward, 1883-1970.1
- Kennard, D. C. Jr.1
- Kitt Peak National Observatory.1
- Kleffel, O.1
- Klein, Elias1
- Klopsteg, Paul E.1
- Klopsteg, Paul Ernest, 1889-1