| Folder 42/7 | Lacerva, Salvatore, P.. — Nov 11 1957-Jun 27 1958 | |
| Folder 42/8 | Lacey, John I.. — May 1 1953-Feb 10 1965 | |
| Folder 42/9 | Lach, George. — Jan 12 1965 | |
| Folder 42/10 | Lackey, Donald E. (Mrs.). — Mar 17 1949 | |
| Folder 42/11 | Lacourriere, Roy. — Jun 20 1963 | |
| Folder 42/12 | Ladkin, J. F.. — Aug 8 1969-Oct 1 1969 | |
| Folder 42/13 | Lafollette, Robert M.. — Oct 3 1945-Oct 13 1945 | |
| Folder 42/14 | Lainer, Harriet. — Jun 23 1966-Jul 1 1966 | |
| Folder 42/15 | Lambert, Robert A.. — May 27 1936-Jun 11 1946 | |
| Folder 42/16 | Lamberton, Harry C.. — Jan 9 1937-Sep 22 1953 | |
| Folder 42/17 | Lamberton, Harry C.. — Feb 2 1954-Nov 6 1960 | |
| Folder 42/18 | Lamberton, Helen. — May 5 1959-Jun 24 1959 | |
| Folder 42/19 | Lamberton, Nancy. — Apr 14 1964 | |
| Folder 42/20 | Lamm, L. B.. — Jun 7 1966-Jan 25 1968 | |
| Folder 42/21 | Lamont, Corliss. — Mar 14 1938-Apr 17 1946 | |
| Folder 42/22 | Lamotte, Robert. — Jul 15 1976 | |
| Folder 42/23 | Lancaster, H. C.. — Jul 2 1942 | |
| Folder 42/24 | Land, Marvin. — Dec 10 1971-Dec 16 1971 | |
| Folder 42/25 | Landis, Edward E.. — Oct 10 1946-Nov 15 1946 | |
| Folder 42/26 | Landis, Lesley M.. — Mar 29 1968 | |
| Folder 42/27 | Lane, William Preston. — Dec 2 1947-Dec 5 1947 | |
| Folder 42/28 | Langfeld, Herbert S.. — Feb 12 1940-Jul 28 1947 | |
| Folder 42/29 | Langley, L. L.. — Feb 7 1957-Mar 13 1957 | |
| Folder 42/30 | Langworthy, Orthello. — Sep 28 1937-Apr 29 1955 | |
| Folder 42/31 | Lansberg, Melvin. — Nov 25 1975 | |
| Folder 42/32 | Lansdell, Herbert C.. — Jan 26 1967-May 22 1967 | |
| Folder 42/33 | Lape, Esther Everett. — Jul 17 1939-Jan 15 1957 | |
| Folder 42/34 | Lapinsohn, Leonard I.. — Sep 20 1951-Sep 14 1968 | |
| Folder 42/35 | Lapsley, James W.. — May 11 1936 | |
| Folder 42/36 | Larkey, Sanford V.. — Jun 15 1938-Apr 6 1943 | |
| Folder 42/37 | Larrabee, Martin G.. — Feb 6 1959-Feb 10 1959 | |
| Folder 42/38 | Larsell. — Jun 17 1940 | |
| Folder 42/39 | Larson, Cedric A.. — May 4 1976-Apr 8 1980 | |
| Folder 42/40 | Larson, John A.. — Aug 21 1952-Aug 27 1965 | |
| Folder 42/41 | Larson, Dorothy Jane. — Dec 9 1941 | |
| Folder 42/42 | Larsson, Knut. — Jan 21 1957-Nov 5 1959 | |
| Folder 42/43 | Lasagna, Louis. — Dec 17 1956-Feb 6 1963 | |
| Folder 42/44 | Lasalle, Michael. — Oct 24 1960 | |
| Folder 42/45 | Lashley, K. S.. — Jun 17 1933-Apr 19 1955 | |
| Folder 42/46 | Lasker, Albert D. (Mrs.). — Dec 2 1946 | |
| Folder 42/47 | Lasky, J. J.. — Nov 16 1961 | |
| Folder 42/48 | Lasslo, Andrew. — Jan 22 1958-Feb 11 1958 | |
| Folder 42/49 | Lat, Jose. — Mar 4 1964-Apr 27 1964 | |
| Folder 42/50 | Laties, Victor. — Nov 5 1971-Jan 23 1973 | |
| Folder 42/51 | Latraverse, V.. — Apr 6 1974 | |
| Folder 42/52 | Laufer, Maurice W.. — May 24 1948-Jun 1 1948 | |
| Folder 42/53 | Laughlin, Henry P.. — Nov 5 1959-Apr 12 1967 | |
| Folder 42/54 | Laurinaitis, E.. — Nov 19 1978-Nov 29 1978 | |
| Folder 42/55 | Lautenschlager, A.. — May 30 1939 | |
| Folder 42/56 | Lawrence, I. Leslie. — Jun 30 1938 | |
| Folder 42/57 | Lawrence, L. R.. — Jul 26 1967 | |
| Folder 42/59 | Lawrence, William, L.. — Aug 27 1953 | |
| Folder 42/60 | Lawson, John. — Mar 4 1963 | |
| Folder 42/61 | Lawton, Alfred H.. — Feb 5 1951 | |
| Folder 42/62 | Lazere, Florence. — Sep 25 1962-Mar 18 1964 | |
| Folder 42/63 | Leaf, Russell C.. — Sep 29 1961-Dec 15 1961 | |
| Folder 42/64 | Leak, James. — Dec 9 1947 | |
| Folder 42/65 | Leake, Chauncey. — Sep 1956-Nov 19 1964 | |
| Folder 42/66 | Leake, Nancy. — n.d. | |
| Folder 42/67 | Leans, R. J.. — Jun 13 1953 | |
| Folder 42/68 | Leavey, Sandra. — Sep 21 1977 | |
| Box 43 | Lebe-Lidd | |
| Folder 43/1 | Lebedenko, V.. — Nov 19 1943-Feb 16 1946 | |
| Folder 43/2 | Lebedev, B. A.. — Jul 19 1966 | |
| Folder 43/3 | Lebensohn, Zigmond M.. — Jul 3 1957-May 13 1970 | |
| Folder 43/4 | Lebouvier, J. D.. — Sep 1 1960 | |
| Folder 43/5 | Leody, Ann. — Apr 16 1975-May 16 1976 | |
| Folder 43/6 | Lederer, Elizabeth. — May 13 1960-Oct 26 1960 | |
| Folder 43/7 | Lederer, Kurt. — Mar 2 1960-Nov 7 1960 | |
| Folder 43/8 | Le Douarec, J. C.. — Jun 14 1968-Jun 24 1968 | |
| Folder 43/9 | Lee, An-Shih. — Aug 11 1966-Aug 23 1966 | |
| Folder 43/10 | Lee, Anthony. — Mar 26 1962 | |
| Folder 43/11 | Lee, F. C.. — Jan 4 1938 | |
| Folder 43/12 | Lee, Hans E.. — Mar 8 1968 | |
| Folder 43/13 | Lee, Lyndon E. Jr.. — Feb 17 1964, Jan 27 1972 | |
| Folder 43/14 | Lee, Milton O.. — Aug 4 1951-Dec 21 1961 | |
| Folder 43/15 | Lee, Nellie. — Feb 8 1964 | |
| Folder 43/16 | Lee, Willard E.. — May 5 1960 | |
| Folder 43/17 | Leet, Dorothy F.. — May 5 1943 | |
| Folder 43/18 | Legeder, Dorothy. — Feb 19 1966-Jul 19 1966 | |
| Folder 43/19 | Lehmann, Heinz E.. — Jun 23 1977 | |
| Folder 43/20 | Lehninger, Albert L.. — Apr 2 1954-Mar 9 1971 | |
| Folder 43/21 | Lehr, David. — Aug 12 1971 | |
| Folder 43/22 | Lehrman, Daniel S.. — Nov 1 1948-Dec 5 1956 | |
| Folder 43/23 | Leibold, Karl F.. — Apr 10 1959 | |
| Folder 43/24 | Leigh, Denis. — Dec 2 1948-Apr 22 1971 | |
| Folder 43/25 | Leighton, Alexander H.. — Dec 26 1941-Jan 7 1970 | |
| Folder 43/26 | Leighton, Dorothea. — Jul 24 1944-May 7 1971 | |
| Folder 43/27 | Leitenberg, Milton. — May 27 1957-Sep 13 1963 | |
| Folder 43/28 | Lelord, Gilbert. — Apr 29 1968 | |
| Folder 43/29 | Lemkau, Paul. — Mar 7 1938-Feb 7 1963 | |
| Folder 43/30 | Lemkau, Ruth. — n.d. | |
| Folder 43/31 | Lemmon, Kellyn A.. — Mar 23 1967-Apr 2 1967 | |
| Folder 43/32 | Lennertz, Erich. — Oct 21 1970 | |
| Folder 43/33 | Lentz, Walter. — Feb 20 1968-Mar 27 1968 | |
| Folder 43/34 | Leonard, Dale W.. — Feb 3 1972-May 28 1974 | |
| Folder 43/35 | Leontief, Wassily. — Feb 13 1978 | |
| Folder 43/36 | Lepeschkin. — May 2 1956 | |
| Folder 43/37 | Lepkovsky, Samuel. — May 25 1955-Mar 1 1966 | |
| Folder 43/38 | Leser, Felix Agnus. — Aug 19 1933-Nov 9 1933 | |
| Folder 43/39 | Leslie, Franklin E.. — Jul 24 1961 | |
| Folder 43/40 | Leslie, Sarah. — Aug 16 1960 | |
| Folder 43/41 | Lessy, Kurt. — Aug 14 1966-Aug 18 1966 | |
| Folder 43/42 | Lester, R. M.. — Dec 12 1940-Jan 10 1941 | |
| Folder 43/43 | Levey, Archie B.. — Jun 6 1968-Nov 19 1968 | |
| Folder 43/44 | Levey, Miriam. — Apr 3 1957 | |
| Folder 43/45 | Levick, Marty. — Dec 13 1974 | |
| Folder 43/46 | Levin, Max. — Dec 2 1940-Apr 7 1953 | |
| Folder 43/47 | Levine, B. S.. — Jan 16 1958-May 5 1958 | |
| Folder 43/48 | Levine, Ira. — Nov 29 1967 | |
| Folder 43/49 | Levine, Maurice. — May 1 1940-Sep 20 1967 | |
| Folder 43/50 | Levine, Richard. — n.d. | |
| Folder 43/51 | Levine, Seymour. — Jul 5 1957-Jul 10 1957 | |
| Folder 43/52 | Levy, David M.. — Dec 28 1942-Oct 29 1952 | |
| Folder 43/53 | Levy, Norman A.. — Feb 13 1946 | |
| Folder 43/54 | Lewin, John Henry. — n.d. | |
| Folder 43/55 | Lewis. — Apr 26 1940 | |
| Folder 43/56 | Lewis, Angela. — Jun 6 1979 | |
| Folder 43/57 | Lewis, Aubrey. — May 27 1956-Sep 26 1956 | |
| Folder 43/58 | Lewis, Carl Clyde. — Jun 10 1952 | |
| Folder 43/59 | Lewis, Elizabeth. — Mar 28 1940 | |
| Folder 43/60 | Lewis, Emily. — Apr 8 1964-Apr 14 1964 | |
| Folder 43/61 | Lewis, H. E.. — Apr 2 1963 | |
| Folder 43/62 | Lewis, Henry Howell. — Sep 24 1956 | |
| Folder 43/63 | Lewis, Ivey F.. — May 19 1936 | |
| Folder 43/64 | Lewis, Juan. — May 6 1962 | |
| Folder 43/65 | Lewis, Julian H.. — Apr 21 1941-Apr 24 1941 | |
| Folder 43/66 | Lewis, Margaret. — Jun 19 1948-Jun 27 1957 | |
| Folder 43/67 | Lewis, Mary Louise. — Jul 25 1940-Sep 20 1940 | |
| Folder 43/68 | Lewis, Nolan D. C.. — Mar 15 1956-Sep 8 1961 | |
| Folder 43/69 | Lewis, Philip Meriwether. — Feb 16 1965-Jun 17 1965 | |
| Folder 43/70 | Lewis, Trent. — Mar 26 1957-May 12 1961 | |
| Folder 43/71 | Lewis, Warren H.. — Jun 3 1955-Feb 4 1964 | |
| Folder 43/72 | Leyman, Robert. — Mar 8 1949 | |
| Folder 43/73 | Leyton, Robert A.. — Nov 17 1977 | |
| Folder 43/74 | Liberson, W. T.. — Apr 12 1961-Apr 19 1961 | |
| Folder 43/75 | Lichstein, Jacob. — Sep 3 1963 | |
| Folder 43/76 | Lichtenberg, Sarah. — Dec 7 1948 | |
| Folder 43/77 | Lichtenstein, Parker E.. — Apr 3 1950 | |
| Box 44 | Lidd-Long | |
| Folder 44/1-3 | Liddell, Howard S.. — 1932-1962 Arranged in chronological order: Folder 1: Apr 21 1932-Apr 21 1942 Folder 2: Feb 18 1943-Mar 4 1952 Folder 3: Sep 22 1953-Nov 14 1962 Letters with Howard Liddell of Cornell University (108 letters, 1932-1962) concern their similar research with conditional reflexes, their friendship with the Russian scientists Kupalov, Fursikov, Andreyev, and Pavlov, as well as personal matters. | |
| Folder 44/4 | Lidz, Ruth W.. — Apr 12 1940-Mar 22 1979 | |
| Folder 44/5 | Lidz, Theodore. — Feb 3 1939-Apr 26 1979 | |
| Folder 44/6 | Lieberman, Arnold. — Apr 20 1959-May 22 1962 | |
| Folder 44/7 | Lieberman, Jerrold. — Jan 6 1953 | |
| Folder 44/8 | Liebson, Ira. — Nov 10 1966 | |
| Folder 44/9 | Light, Jacob S.. — Nov 26 1935-Dec 14 1949 | |
| Folder 44/10 | Light, Richard U.. — Jun 17 1940 | |
| Folder 44/11 | Ligon, Gertrude. — May 13 1935-Apr 21 1937 | |
| Folder 44/12 | Lilienfeld, Abraham M.. — Nov 30 1959 | |
| Folder 44/13 | Lilienthal, Joe. — Nov 30 1950-Nov 17 1951 | |
| Folder 44/15 | Lilley, Walker W.. — Jun 28 1966-Sep 7 1967 | |
| Folder 44/16 | Lillie, Ralph. — Feb 23 1938-Dec 10 1949 | |
| Folder 44/17 | Lindahl, Leslie E. H.. — Dec 23 1960-Feb 9 1961 | |
| Folder 44/18 | Linden, Maurice. — Nov 10 1966-Sep 12 1967 | |
| Folder 44/19 | Lindlberg, Alex. — Mar 23 1933 | |
| Folder 44/20 | Lindley, Clyde J.. — Apr 8 1959-Oct 22 1959 | |
| Folder 44/21 | Lindner, Harold. — Oct 24 1947-Nov 22 1957 | |
| Folder 44/22 | Lindner, Robert. — Feb 23 1948-May 10 1955 | |
| Folder 44/23 | Lindsley, B.. — Mar 30 1936 | |
| Folder 44/24 | Lindsley, Donald B.. — May 17 1947 | |
| Folder 44/25 | Lindsley, Ogden R.. — Feb 12 1957-Feb 7 1969 | |
| Folder 44/26 | Linn, Bernard S.. — Jan 6 1963-Feb 11 1964 | |
| Folder 44/27 | Linn, Louis. — Oct 23 1951-Oct 23 1963 | |
| Folder 44/28 | Lins, Heinz. — Oct 31 1956-Nov 24 1956 | |
| Folder 44/29 | Linthicum, W. A.. — n.d. | |
| Folder 44/30 | Linton, Mabel. — May 31 1958-Aug 22 1958 | |
| Folder 44/31 | Lion, E. G.. — Jan 12 1946 | |
| Folder 44/32 | Lipkin, Mack. — May 1 1959-May 5 1959 | |
| Folder 44/33 | Lipshultz, A.. — Aug 27 1959-Sep 21 1959 | |
| Folder 44/34 | Lipsitz, Max H.. — Jul 11 1967 | |
| Folder 44/35 | Lipton, Earle L.. — Apr 16 1957 | |
| Folder 44/36 | Lisansky, Edith S.. — Nov 6 1961-Nov 9 1961 | |
| Folder 44/37 | Liss, Roberta. — Apr 19 1972 | |
| Folder 44/38 | Lissak, Kalman C.. — Feb 20 1968-May 8 1975 | |
| Folder 44/39 | Liston, Mary F.. — Jul 4 1936-Jul 22 1936 | |
| Folder 44/40 | Lithauer, D. B.. — Jul 24 1955-Nov 16 1959 | |
| Folder 44/41 | Little, W. A.. — May 6 1958-Oct 17 1967 | |
| Folder 44/42 | Littlehales, John. — Jul 29 1959 | |
| Folder 44/43 | Littlepage, Lewis. — Aug 27 1959 | |
| Folder 44/44 | Litvinov, Ivy. — Dec 17 1941-Apr 24 1942 | |
| Folder 44/45 | Litvinov, Maxim. — Apr 6 1942-Apr 8 1942 | |
| Folder 44/46 | Litwin, Jerzy. — May 1 1966 | |
| Folder 44/47 | Livingston, Andrew. — Dec 6 1957-Feb 21 1980 | |
| Folder 44/48 | Livingston, Robert B.. — Nov 22 1957-Dec 17 1957 | |
| Folder 44/49 | Livingstone, H. D.. — Oct 21 1958-Dec 11 1958 | |
| Folder 44/50 | Lizkova, Ivana. — Mar 21 1967 | |
| Folder 44/51 | Lockhart, Kenn. — n.d. | |
| Folder 44/51 | Lockhart, Neil. — n.d. | |
| Folder 44/52 | Lockhart, Russell A.. — Nov 9 1966-1970 | |
| Folder 44/53 | Lockwood, George Thomas. — Jul 17 1961 | |
| Folder 44/54 | Lockwood, Rose. — Nov 14 1955 | |
| Folder 44/55 | Loeb, Robert F.. — May 28 1952-Oct 8 1952 | |
| Folder 44/56 | Lofving, Birger. — Oct 10 1963 | |
| Folder 44/57 | Logan, Cheryl A.. — May 16 1978 | |
| Folder 44/58 | Logan, Elisabeth. — Jan 14 1954 | |
| Folder 44/59 | Londa, Zdenek. — Dec 18 1961 | |
| Folder 44/60 | London, Ivan D.. — May 28 1952 | |
| Folder 44/61 | Long, Clarence. — Jan 16 1966 | |
| Folder 44/62 | Long, Donlin. — May 30 1974-Jun 4 1974 | |
| Folder 44/63 | Long, Howard F.. — Jan 28 1960 | |
| Folder 44/64 | Long, Perrin H.. — Feb 25 1941-Jan 22 1964 | |
| Folder 44/65 | Longan, Robert. — Sep 14 1952 | |
| Folder 44/66 | Longcope, Warfield T.. — Sep 22 1939-Dec 12 1945 | |
| Box 45 | Lope-McCu | |
| Folder 45/1 | Lopez, Ibor J. J.. — Aug 25 1975 | |
| Folder 45/2 | Lorenz, Konrad. — Oct 16 1970-May 18 1971 | |
| Folder 45/3 | Lotspeich, William D.. — Sep 24 1965 | |
| Folder 45/4 | Lotti, Ivor. — Jul 26 1961 | |
| Folder 45/5 | Lotti, Victor. — Jun 1965 | |
| Folder 45/6 | Louis, Gregory B.. — May 6 1958-Mar 27 1963 | |
| Folder 45/7 | Louis, "Kappin" (Mrs. Harry Louis). — May 6 1958-Dec 1 1964 | |
| Folder 45/8 | Louis, Margot Kathleen. — Dec 21 1973 | |
| Folder 45/9 | Love, W. D.. — Jan 12 1961 | |
| Folder 45/10 | Lovelock, Margaret. — Oct 27 1971 | |
| Folder 45/11 | Loving, Mike. — Apr 26 1938-Nov 8 1950 | |
| Folder 45/12 | Lowe, Hilton C. (Mrs.). — May 11 1942 | |
| Folder 45/13 | Lowenbach, Hans. — Oct 22 1937-Dec 15 1955 | |
| Folder 45/14 | Lowenhaupt, Benjamin. — Sep 13 1965-Jan 25 1967 | |
| Folder 45/15 | Lowenstein, L. F.. — Sep 21 1977 | |
| Folder 45/16 | Lown, Bernard. — Aug 2 1963-Nov 7 1963 | |
| Folder 45/17 | Lubin, Leonard. — Jul 26 1963 | |
| Folder 45/18 | Lucas, Leon. — Aug 7 1947 | |
| Folder 45/19 | Ludanov, K.. — 1977 | |
| Folder 45/20 | Ludington, C. Townsend Jr.. — Jun 3 1971-Jun 28 1978 | |
| Folder 45/21 | Luetscher, John. — Apr 22 1948 | |
| Folder 45/22 | Luhrmann, George W.. — Sep 6 1965 | |
| Folder 45/23 | Luminet, Daniel. — Jul 17 1963 | |
| Folder 45/24 | Lumsden, D. Barry. — May 31 1972 | |
| Folder 45/25 | Lundholm, Helge. — Mar 27 1941 | |
| Folder 45/26 | Lunn, Villars. — Apr 6 1961 | |
| Folder 45/27 | Lunt, Alfred. — Apr 17 1940 | |
| Folder 45/28 | Luria, Alexis R.. — Apr 10 1931-Jan 20 1959 | |
| Folder 45/29 | Luton, Frank H.. — Jun 16 1933 | |
| Folder 45/30 | Luttrell, Charles N.. — Oct 5 1959 | |
| Folder 45/31 | Lutz, Karl B.. — May 19 1965 | |
| Folder 45/32 | Lutzky, Harriet. — Feb 25 1966 | |
| Folder 45/33 | Lyman, Richard S.. — May 26 1938-Oct 27 1947 | |
| Folder 45/34 | Lynch, Holmes. — Jan 13 1948-Jan 22 1948 | |
| Folder 45/35 | Lynch, James J.. — Mar 10 1967-Nov 26 1968 | |
| Folder 45/36 | Lynch, James J.. — Jan 2 1969-Sep 1971 | |
| Folder 45/37 | Lynch, James J.. — Mar 3 1972-Sep 7 1972 | |
| Folder 45/38 | Lynch, James J.. — Jan 26 1973-Feb 13 1980 | |
| Folder 45/39 | Lynn, Richard. — Aug 18 1965-Mar 22 1967 | |
| Folder 45/40 | Lyons, Eugene. — Nov 21 1939-Apr 4 1963 | |
| Folder 45/41 | Lyons, Joseph. — Mar 7 1961 | |
| Folder 45/42 | Lytle, Loy D.. — Jan 19 1971 |