| Folder 54/6 | Quarry, Thomas. — Mar 23 1976-Mar 24 1976 | |
| Folder 54/7 | Raab, Wilhelm. — Apr 9 1957-May 16 1962 | |
| Folder 54/8 | Rachman, S.. — Jan 22 1964-Oct 24 1967 | |
| Folder 54/9 | Rado, S.. — Dec 17 1945-Jun 11 1948 | |
| Folder 54/10 | Radouco-Thomas, C.. — May 29 1969-Oct 17 1969 | |
| Folder 54/12 | Rafky, Charles S.. — Jul 15 1965 | |
| Folder 54/13 | Ragland, William. — Sep 2 1976 | |
| Folder 54/14 | Rakusen, Jack. — Oct 17 1951-Nov 1 1951 | |
| Folder 54/15 | Ralph, Isabella. — Feb 10 1949 | |
| Folder 54/16 | Ramos, Edith. — Dec 27 1966 | |
| Folder 54/17 | Ramsay, Douglas. — Dec 1 1967 | |
| Folder 54/18 | Ramsey, Louie R.. — Mar 7 1942-Mar 25 1944 | |
| Folder 54/19 | Rand, Michael. — Sep 29 1959-Nov 18 1960 | |
| Folder 54/20 | Randall, David. — Sep 29 1977 | |
| Folder 54/21 | Randolph, Don. — Apr 18 1967 | |
| Folder 54/22 | Randolph, Elizabeth. — 1961-Mar 14 1967 | |
| Folder 54/23 | Randolph, K.. — n.d. | |
| Folder 54/24 | Randolph, Theron G.. — Aug 21 1952-Nov 22 1967 | |
| Folder 54/25 | Ransmeier, R. E.. — May 21 1950-May 29 1951 | |
| Folder 54/26 | Ranson, S. Walter. — Nov 10 1936 | |
| Folder 54/27 | Rao, P. L.. — Apr 26 1961 | |
| Folder 54/28 | Rapaport, David. — Jan 15 1947-Jun 9 1950 | |
| Folder 54/29 | Rashevsky, Nicholai. — Feb 26 1935-Feb 3 1972 Correspondence with Nicholai Rashevsky (31 items, 1935-1972) concerns the mathematical physics of the conditional reflex. | |
| Folder 54/30 | Rasmussen, Hanne. — Aug 1 1979 | |
| Folder 54/31 | Ratanakorn, Prasop. — Jun 1 1959-Oct 5 1959 | |
| Folder 54/32 | Raven, Charles. — n.d. | |
| Folder 54/33 | Ravenet, Luis. — Apr 18 1968 | |
| Folder 54/34 | Ravitch, Michael L.. — Apr 18 1936-Mar 2 1938 | |
| Folder 54/35 | Ray, Anna. — Mar 7 1954-Jan 30 1959 | |
| Folder 54/36 | Ray, Roger D.. — Mar 22 1972-Nov 1 1976 | |
| Folder 54/37 | Rayburn, Charles. — Jun 28 1960 | |
| Folder 54/38 | Raymond, M.J.. — Feb 4 1957-Feb 25 1957 | |
| Folder 54/39 | Razran, Gregory. — Oct 19 1936-May 24 1968 | |
| Folder 54/40 | Read, Charlotte S.. — Jun 10 1963-Oct 17 1979 | |
| Folder 54/41 | Redfern, Joseph. — Jul 3 1945-Dec 13 1957 | |
| Folder 54/42 | Redfield, Robert. — Nov 16 1958 | |
| Folder 54/43 | Redican, William K.. — Nov 21 1972 | |
| Folder 54/44 | Redmayne, Pamela. — Nov 6 1935 | |
| Folder 54/45 | Reed, Lowell J.. — Jan 28 1941-Jan 13 1956 | |
| Folder 54/46 | Reese, Mary Elizabeth. — Jan 23 1963-Aug 4 1970 | |
| Folder 54/47 | Reese, William G.. — Nov 17 1948-Dec 22 1952 | |
| Folder 54/48 | Reese, William G.. — Jan 9 1953-Nov 23 1953 | |
| Folder 54/49 | Reese, William G.. — Mar 22 1954-Oct 15 1955 | |
| Folder 54/50 | Reese, William G.. — Mar 19 1956-Oct 22 1959 | |
| Folder 54/51 | Reese, William G.. — Jul 27 1960-Sep 26 1963 | |
| Folder 54/52 | Reese, William G.. — Jan 12 1964-Dec 24 1964 | |
| Folder 54/53 | Reese, William G.. — Jan 11 1965-Dec 29 1971 | |
| Folder 54/53.1 | Reese, William G.. — Jan 5 1972-Nov 30 1979 | |
| Folder 54/54 | Reichard, J. D.. — Nov 9 1944-Dec 11 1950 | |
| Folder 54/55 | Reid, J. Thomas. — Jul 1954 | |
| Folder 54/56 | Reid, Mont R.. — Aug 20 1924-Nov 25 1924 | |
| Folder 54/57 | Reid, Nancy Bayley. — Jan 18 1951 | |
| Folder 54/58 | Reid, Richard. — Apr 28 1961-May 25 1961 | |
| Folder 54/59 | Reiner, Gabriel. — Jun 26 1957-Jan 25 1958 | |
| Folder 54/60 | Reimann, R.. — Nov 21 1956 | |
| Folder 54/61 | Reis, Manruo Schueler. — Oct 10 1967-Aug 19 1968 | |
| Folder 54/62 | Reiser, Morton F.. — Mar 11 1957-Apr 26 1962 | |
| Folder 54/63 | Reisner, David. — Jul 19 1973 | |
| Folder 54/64 | Reiss, Bernard. — Feb 26 1946 | |
| Folder 54/65 | Reitan, Ralph M.. — Dec 18 1953 | |
| Folder 54/66 | Reiter, Reuben. — Jul 2 1954-Jul 9 1954 | |
| Box 55 | Renn-Roll | |
| Folder 55/1 | Rennie, Thomas. — Mar 31 1941-Feb 20 1956 | |
| Folder 55/2 | Renshaw, Donald. — Oct 2 1924-Jan 25 1947 | |
| Folder 55/3 | Rescorla, Robert A.. — Jun 1 1972-Aug 8 1973 | |
| Folder 55/4 | Reus, James F.. — Jun 2 1964-Jul 31 1976 | |
| Folder 55/5 | Reus, Victor I.. — Nov 19 1968-Jan 12 1969 | |
| Folder 55/6 | Reusban, Donald. — n.d. | |
| Folder 55/7 | Reynolds, John S.. — n.d. | |
| Folder 55/8 | Reynolds, Millie. — Jul 13 1959 | |
| Folder 55/9 | Rhine, J. B.. — Aug 5 1968-Mar 15 1973 | |
| Folder 55/10 | Rice, Ronald. — Mar 17 1976 | |
| Folder 55/11 | Rich, Adrienne. — Apr 24 1960 | |
| Folder 55/12 | Rich, Arnold. — Jun 1940-Jan 11 1967 | |
| Folder 55/13 | Rich, Cynthia. — Apr 16 1953-Apr 27 1953 | |
| Folder 55/14 | Rich, Dorothy. — Apr 7 1938-Jan 28 1939 | |
| Folder 55/15 | Richards, Dickinson W.. — Apr 17 1959-Apr 24 1959 | |
| Folder 55/16 | Richards, Esther L.. — Jul 11 1939-Mar 13 1950 | |
| Folder 55/17 | Richardson, Edward L. Jr.. — Jun 17 1938-Aug 6 1964 | |
| Folder 55/18 | Richardson, Ronald. — May 20 1979-Sep 8 1979 | |
| Folder 55/19 | Richter, Anders. — Mar 8 1965-Jun 2 1965 | |
| Folder 55/20 | Richter, Curt P.. — Feb 1 1940-Apr 6 1977 | |
| Folder 55/21 | Riddell, Victor. — Jul 11 1936-Jul 23 1936 | |
| Folder 55/22 | Ridgway, Elizabeth P.. — Feb 4 1958-Jul 10 1958 | |
| Folder 55/23 | Ridolfi, Rodolfo F.. — Jan 3 1941-May 1966 | |
| Folder 55/24 | Ridyard, Jean. — Jul 9 1964-Oct 8 1964 | |
| Folder 55/25 | Rienhoff, MacCullum. — May 3 1957-Jul 30 1966 | |
| Folder 55/26 | Rienhoff, William F. Jr.. — May 17 1940-Aug 11 1960 | |
| Folder 55/27 | Riess, Bernard F.. — Nov 13 1943-Feb 6 1946 | |
| Folder 55/28 | Riess, David. — May 16 1969-Dec 16 1970 | |
| Folder 55/29 | Riley, Lee H.. — Dec 1 1976 | |
| Folder 55/30 | Riley, Richard L.. — Mar 14 1962-Apr 28 1964 | |
| Folder 55/31 | Ringland, Arthur. — Feb 24 1970 | |
| Folder 55/32 | Ringold, Evelyn. — Nov 27 1976-Apr 7 1977 | |
| Folder 55/33 | Ringrose, Hyacinthe. — Jan 3 1941 | |
| Folder 55/34 | Rinkle, Max. — Jun 1 1962-Jun 11 1966 | |
| Folder 55/35 | Rioch, David McK.. — Jan 16 1941-Jun 9 1977 | |
| Folder 55/36 | Ripley, Herbert S.. — Mar 15 1937-Mar 16 1937 | |
| Folder 55/37 | Rippman, Ernst. — Apr 16 1976 | |
| Folder 55/38 | Risman, Julius. — Mar 18 1958-Oct 23 1958 | |
| Folder 55/39 | Riss, Walter. — Apr 3 1968 | |
| Folder 55/40 | Ritchie, E. A.. — n.d. | |
| Folder 55/41 | Ritchie, Sue. — Apr 25 1939 | |
| Folder 55/42 | Rjewsky, Anna. — Jan 2 1942-Mar 12 1942 | |
| Folder 55/43 | Roach, Wilfred E.. — Jul 12 1980 | |
| Folder 55/44 | Robb, J. D.. — Sep 28 1959 | |
| Folder 55/45 | Robbins, Bernard S.. — May 10 1955 | |
| Folder 55/46 | Roberts, Ella. — May 7 1934 | |
| Folder 55/47 | Roberts, H. J.. — Dec 6 1962-Dec 18 1962 | |
| Folder 55/48 | Roberts, Holland. — Jul 29 1955-Aug 4 1958 | |
| Folder 55/49 | Roberts, John. — Jun 19 1956 | |
| Folder 55/50 | Roberts, Kenneth. — Oct 5 1924 | |
| Folder 55/51 | Roberts, Owen J.. — May 23 1953 | |
| Folder 55/52 | Robertson, Clara H.. — Dec 11 1968-May 13 1969 | |
| Folder 55/53 | Robertson, Joseph Henry. — n.d. | |
| Folder 55/54 | Robertson, Judson. — May 24 1962 | |
| Folder 55/55 | Robertson, Mary. — Jan 23 1951 | |
| Folder 55/56 | Robie, Theodore R.. — Jul 18 1960 | |
| Folder 55/57 | Robinson, C. Cabill. — Nov 2 1934 | |
| Folder 55/58 | Robinson, G. Canby. — May 25 1939-Nov 28 1939 | |
| Folder 55/59 | Robinson, Geroid T.. — Jan 18 1952-Mar 31 1953 | |
| Folder 55/60 | Robinson, Harvey A.. — Sep 21 1959-Aug 20 1963 | |
| Folder 55/61 | Robinson, Janice. — Jul 24 1945-Nov 2 1946 | |
| Folder 55/62 | Robinson, Janice. — Feb 2 1947-Jun 7 1954 | |
| Folder 55/63 | Robinson, Nancy. — n.d. | |
| Folder 55/64 | Robinson, Verne G.. — Apr 2 1964-Jul 16 1976 | |
| Folder 55/65 | Robustelli, Francesco. — Jun 24 1964 | |
| Folder 55/65.5 | Rockefeller, Blanchette. — Apr 7 1937 | |
| Folder 55/66 | Rockefeller, John D. III. — Jun 22 1937-Jan 14 1943 | |
| Folder 55/67 | Rodger, T., Ferguson. — Oct 20 1948-May 5 1964 | |
| Folder 55/68 | Roebuck, Basil. — Jan 8 1957-Mar 23 1957 | |
| Folder 55/69 | Roelofs, Richard Jr.. — Dec 12 1956-Dec 12 1966 | |
| Folder 55/70 | Roelofs, Richard Jr. (Mrs.). — Feb 3 1960 | |
| Folder 55/71 | Rogers, David E.. — Sep 11 1968 | |
| Folder 55/72 | Rogers, Walter S.. — Dec 5 1934-May 24 1939 | |
| Folder 55/73 | Rogerson, C. H.. — Jun 21 1940-Jul 3 1942 | |
| Folder 55/74 | Roitbank, Alexander I.. — Aug 22 1958-Jul 13 1972 | |
| Folder 55/75 | Rojas-Ramirez, Jose A.. — May 29 1968 | |
| Folder 55/76 | Rokhlin, L. L.. — Mar 16 1964 | |
| Folder 55/77 | Roll, Frederick. — Jun 16 1958-Jul 20 1959 | |
| Folder 55/78 | Rolland, Michel. — Mar 18 1966-Mar 24 1966 | |
| Folder 55/79 | Rolleston, Humphry. — Dec 10 1924-Nov 14 1936 | |
| Box 56 | Roma-Sait | |
| Folder 56/1 | Romano, John. — Jan 5 1960-Mar 29 1960 | |
| Folder 56/2 | Roose, Lawrence J.. — Jul 1955 | |
| Folder 56/3 | Roosevelt, Franklin Delano. — May 10 1933 | |
| Folder 56/4 | Rosa, Suzanne. — Sep 12 1971-Jun 10 1977 | |
| Folder 56/5 | Rosanoff, Aaron J.. — Dec 13 1938 | |
| Folder 56/6 | Rose, Jerzy E.. — Mar 18 1942-Oct 18 1972 | |
| Folder 56/7 | Rose, Philip S.. — Jan 4 1939 | |
| Folder 56/8 | Rosen, Harold. — Jan 10 1947-Apr 6 1976 | |
| Folder 56/9 | Rosen, Jeanne. — n.d. | |
| Folder 56/10 | Rosen, Ralph. — Oct 14 | |
| Folder 56/11 | Rosen, Victor. — Jan 24 1942-Jun 1 1957 | |
| Folder 56/12 | Rosenbaum, Milton. — Jan 3 1957-Mar 12 1958 | |
| Folder 56/13 | Rosenblatt, Adam. — Nov 8 1963 | |
| Folder 56/14 | Rosenblatt, Jay. — Oct 6 1948-Oct 1 1951 | |
| Folder 56/15 | Rosenblueth, A.. — Nov 10 1944-Oct 17 1947 | |
| Folder 56/16 | Rosenblum, M. P.. — May 26 1953-Jun 12 1953 | |
| Folder 56/17 | Rosenfeld, Morris. — Mar 7 1941-Apr 29 1954 | |
| Folder 56/18 | Rosenthal, David. — Feb 1 1972 | |
| Folder 56/19 | Rosenthal, J. S.. — Dec 24 1930-Oct 6 1946 | |
| Folder 56/20 | Rosenthal, Sol Roy. — Sep 8 1967-Oct 26 1967 | |
| Folder 56/21 | Rosenthal, Ted L.. — Feb 25 1970-Oct 7 1970 | |
| Folder 56/22 | Rosenzweig, Saul. — Mar 19 1937-Apr 6 1948 | |
| Folder 56/23 | Rosier, Jeanne M.. — May 8 1935 | |
| Folder 56/25 | Ross, David. — Jan 19 1951-Aug 17 1951 | |
| Folder 56/26 | Ross, Mathew. — Jul 29 1959-1962 | |
| Folder 56/27 | Ross, Richard S.. — Dec 2 1977-Nov 8 1978 | |
| Folder 56/28 | Ross, Sherman. — Dec 17 1955-Jul 11 1956 | |
| Folder 56/29 | Rossau, Agnes. — Aug 1 1946-Jan 31 1947 | |
| Folder 56/29.1 | Rossau, Kurt. — Jan 1 1948 | |
| Folder 56/30 | Rossen, Ralph. — Feb 4 1966-May 11 1967 | |
| Folder 56/31 | Rostovsky, S.. — Mar 14 1958-Jun 2 1958 | |
| Folder 56/32 | Rosvold, H. Enger. — Jul 18 1966 | |
| Folder 56/33 | Roth, Edith. — Aug 26 1976-Apr 19 1979 | |
| Folder 56/34 | Roth, Martin. — Nov 25 1952 | |
| Folder 56/35 | Rothlin, Ernst. — May 30 1938-Oct 18 1960 | |
| Folder 56/36 | Rothman, Irwin. — Nov 30 1963-Oct 5 1967 | |
| Folder 56/37 | Rothman, Maurice M.. — Apr 18 1940 | |
| Folder 56/38 | Rougeul, A.. — Nov 19 1962 | |
| Folder 56/39 | Rous, Peyton. — Sep 27 1924-Dec 14 1931 | |
| Folder 56/40 | Rowe, C. P.. — n.d. | |
| Folder 56/41 | Rowell, Henry T.. — Jan 29 1947-May 11 1967 | |
| Folder 56/42 | Rowland, Edwin H.. — Feb 6 1952 | |
| Folder 56/43 | Rowland, Lewis P.. — May 20 1948 | |
| Folder 56/44 | Rowland, Vernon. — Sep 8 1959-Nov 13 1968 | |
| Folder 56/45 | Rowntree, Leonard G.. — Aug 22 1951 | |
| Folder 56/46 | Royce, Joseph R.. — Dec 15 1948-Sep 17 1953 | |
| Folder 56/47 | Royce. — Mar 19 1958 | |
| Folder 56/48 | Royer, Fred L.. — Sep 4 1963-Jun 28 1978 | |
| Folder 56/49 | Ruch, T. C.. — Apr 10 1959-Mar 21 1963 | |
| Folder 56/50 | Rudiger, W.. — Mar 2 1967-Oct 3 1967 | |
| Folder 56/51 | Rudo, Marvin. — Nov 28 1955 | |
| Folder 56/52 | Rudy, Jerry. — Jan 16 1973-Feb 1 1973 | |
| Folder 56/53 | Rudy, Lester H.. — Sep 1 1964-Oct 5 1964 | |
| Folder 56/54 | Ruffo, Michael M.. — Jun 26 1958 | |
| Folder 56/55 | Rugg, Elizabeth. — Dec 1955-Dec 1967 | |
| Folder 56/56 | Ruhenstroth, G.. — Nov 3 1956 | |
| Folder 56/57 | Rupp, Charles. — Jul 1 1957 | |
| Folder 56/58 | Rupriyanov, Peter. — Dec 1961 | |
| Folder 56/59 | Rushmer, Robert F.. — Apr 18 1960-Feb 7 1966 | |
| Folder 56/60 | Rusk, G. Y.. — Nov 26 1943 | |
| Folder 56/61 | Ruskin, D. B.. — Apr 6 1949 | |
| Folder 56/62 | Ruskin, Rugene D.. — May 8 1972 | |
| Folder 56/63 | Russek, Henry I.. — Feb 17 1961 | |
| Folder 56/64 | Russell, Dora. — Nov 18 1977-Aug 23 1978 | |
| Folder 56/65 | Russell, Robert. — Jun 24 1965-Jul 7 1965 | |
| Folder 56/66 | Russell. — May 19 1939 | |
| Folder 56/67 | Russkey. — Dec 24 1961 | |
| Folder 56/68 | Russkikh, V. N.. — Feb 18 1971 | |
| Folder 56/69 | Ruttkay-Nedecky, I.. — Dec 30 1960-Feb 28 1961 | |
| Folder 56/70 | Ruzek, Miloslav. — Nov 20 1959-Aug 13 1963 | |
| Folder 56/71 | Ryan, C. Diller. — Oct 13 1937 | |
| Folder 56/72 | Ryan, John J.. — Feb 11 1935 | |
| Folder 56/73 | Ryan, Oswald. — Jan 20 1940-Nov 28 1940 | |
| Folder 56/74 | Ryberg, Percy E.. — Sep 28 1954-Oct 6 1956 | |
| Folder 56/75 | Ryecroft, H. E.. — Mar 21 1963 | |
| Folder 56/76 | Ryer, Christine. — Jul 22 1963-Oct 23 1963 |