Special Collections 
	and Archives

FBI (FEDERAL BUREAU OF INVESTIGATION) RECORDS

SAC (SPECIAL AGENTS IN CHARGE) LETTERS


FBI
Series 73

Series Box Folder Folder Title
73 - - File No. 66-04
73 1 1
September 30, 1919-September 30, 1920
73 1 2
October 2, 1920-January 30, 1922
73 1 3
February 2-August 31, 1922
73 1 4
September 1, 1922-July 27, 1923
73 1 5
August 2, 1923-May 27, 1924
73 1 6
June 2, 1926-September 1924
73 1 7
October 2, 1924-February 27, 1925


FBI
Series 73

Series Box Folder Folder Title
73 - - File No. 66-04, continued
73 2 1
March 2-August 25, 1925
73 2 2
September 2, 1925-July 31, 1926
73 2 3
August 2, 1926-February 21, 1927
73 2 4
March 1, 1927-April 10, 1928
73 2 5
November 1, 1931-August 15, 1932
73 2 6
August 16, 1932-March 10. 1933
73 2 7
March 13-June 9, 1933


FBI
Series 73

Series Box Folder Folder Title
73 - - File No. 66-04, continued
73 3 1
June 10-September 19, 1933
73 3 2
September 21-November 27, 1933
73 3 3
November 28, 1933-March 2, 1934
73 3 4
March 3-May 4, 1934
73 3 5
May 5-June 16, 1934
73 3 6
June 20-August 30, 1934
73 3 7
September 1-October 22, 1934


FBI
Series 73

Series Box Folder Folder Title
73 - - File No. 66-04, continued
73 4 1
October 25-November 14, 1934
73 4 2
November 15, 1934-January 30, 1935
73 4 3
February 1-28, 1935
73 4 4
March 1-April 11, 1935
73 4 5
April 12-June 30, 1935
73 4 6
July 1-August 24, 1935
73 4 7
August 25-October 24, 1935
73 4 8
October 25, 1935-January 10, 1936


FBI
Series 73

Series Box Folder Folder Title
73 - - File No. 66-04, continued
73 5 1
January 11-March 31, 1936
73 5 2
April 1-May 15, 1936
73 5 3
May 16-June 22, 1936
73 5 4
June 23-August 11, 1936
73 5 5
August 12-October 5, 1936
73 5 6
October 6-November 24, 1936
73 5 7
November 25, 1936-January 15, 1937


FBI
Series 73

Series Box Folder Folder Title
73 - - File No. 66-04, continued
73 6 1
January 16-March 1, 1937
73 6 2
March 2-May 13, 1937
73 6 3
May 14-June 28, 1937
73 6 4
June 29-August 24, 1937
73 6 5
August 25-October 25, 1937
73 6 6
October 26-December 21, 1937
73 6 7
December 22, 1937-January 31, 1938


FBI
Series 73

Series Box Folder Folder Title
73 - - File No. 66-04, continued
73 7 1
February 1-March 15, 1938
73 7 2
March 16-April 22, 1938
73 7 3
April 23-June 18, 1938
73 7 4
June 19-August 31, 1938
73 7 5
September 1-November 2, 1938
73 7 6
November 3, 1938-January 23, 1939
73 7 7
January 24-March 31, 1939


FBI
Series 73

Series Box Folder Folder Title
73 - - File No. 66-04, continued
73 8 1
April 1-June 19, 1939
73 8 2
June 20-August 31, 1939
73 8 3
September 1-November 8, 1939
73 8 4
November 9, 1939-January 17, 1940
73 8 5
January 18-March 31, 1940
73 8 6
April 1-May 31, 1940
73 8 7
June 1-July 19, 1940


FBI
Series 73

Series Box Folder Folder Title
73 - - File No. 66-04, continued
73 9 1
July 20-August 20, 1940
73 9 2
August 21-October 15, 1940
73 9 3
October 16-November 26, 1940
73 9 4
November 27, 1940-January 15, 1941
73 9 5
January 16-March 1, 1941
73 9 6
March 2-April 15, 1941
73 9 7
April 16-May 10, 1941
73 9 8
May 11-June 30, 1941


FBI
Series 73

Series Box Folder Folder Title
73 - - File No. 66-04, continued
73 10 1
July 1-August 15, 1941
73 10 2
August 16-September 30, 1941
73 10 3
October 1-31, 1941
73 10 4
November 1-December 12, 1941
73 10 5
December 13, 1941-January 24, 1942
73 10 6
January 25-February 28, 1942
73 10 7
March 1-April 7, 1942
73 10 8
April 8-May 31, 1942


FBI
Series 73

Series Box Folder Folder Title
73 - - File No. 66-04, continued
73 11 1
June 1-July 7, 1942
73 11 2
July 8-August 13, 1942
73 11 3
August 14-October 15, 1942
73 11 4
October 16-November 22, 1942
73 11 5
November 23-December 23, 1942
73 11 6
December 24, 1942-January 30, 1943
73 11 7
January 31-March 3, 1943


FBI
Series 73

Series Box Folder Folder Title
73 - - File No. 66-04, continued
73 12 1
March 4-April 9, 1943
73 12 2
April 10-May 12, 1943
73 12 3
May 13-June 17, 1943
73 12 4
June 18-July 16, 1943
73 12 5
July 17-August 25, 1943
73 12 6
October 29-December 21, 1943
73 12 7
December 23, 1943-February 8, 1944


FBI
Series 73

Series Box Folder Folder Title
73 - - File No. 66-04, continued
73 13 1
February 9-March 13, 1944, Part A
73 13 2
February 9-March 13, 1944, Part B
73 13 3
March 14-April 21, 1944, Part A
73 13 4
March 14-April 21, 1944, Part B
73 13 5
April 22-May 31, 1944, Part A
73 13 6
April 22-May 31, 1944, Part B


FBI
Series 73

Series Box Folder Folder Title
73 - - File No. 66-04, continued
73 14 1
June 3-30, 1944
73 14 2
July 3-21, 1944, Part A
73 14 3
July 3-21, 1944, Part B
73 14 4
July 22-August 31, 1944
73 14 5
September 2-October 28, 1944


FBI
Series 73

Series Box Folder Folder Title
73 - - File No. 66-04, continued
73 15 1
October 3-31, 1944
73 15 2
November 1-23, 1944
73 15 3
November 24-December 31, 1944
73 15 4
January 15-March 3, 1945
73 15 5
March 6-April 17, 1945
73 15 6
April 18-June 26, 1945
73 15 7
June 30-August 22, 1945


FBI
Series 73

Series Box Folder Folder Title
73 - - File No. 66-04, continued
73 16 1
August 24-November 13, 1945
73 16 2
November 16, 1945-February 12, 1946
73 16 3
February 14-April 15, 1946
73 16 4
April 16-July 9, 1946
73 16 5
July 11-September 30, 1946
73 16 6
October 1-December 21, 1946
73 16 7
January 2-March 13, 1947


FBI
Series 73

Series Box Folder Folder Title
73 - - File No. 66-04, continued
73 17 1
March 17-May 13, 1947
73 17 2
May 15-June 7, 1947
73 17 3
June 9, 1947-August 28, 1947
73 17 4
September 2-October 23, 1947
73 17 5
October 28-December 16, 1947
73 17 6
December 23, 1947-January 26, 1948
73 17 7
January 27-February 16, 1948
73 17 8
February 17-March 30, 1948


FBI
Series 73

Series Box Folder Folder Title
73 - - File No. 66-04, continued
73 18 1
April 6-May 21, 1948
73 18 2
May 25-July 27, 1948
73 18 3
July 30-September 21, 1948
73 18 4
September 28-November 16, 1948
73 18 5
November 18, 1948-January 17, 1949
73 18 6
January 18-March 16, 1949
73 18 7
March 18-May 23, 1949
73 18 8
May 24-July 12, 1949
73 18 9
July 11-October 5, 1949


FBI
Series 73

Series Box Folder Folder Title
73 - - File No. 66-04, continued
73 19 1
October 7-December 27, 1949
73 19 2
December 29, 1949-March 14, 1950
73 19 3
March 16-May 9, 1950
73 19 4
May 12-June 28, 1950
73 19 5
July 3-August 4, 1950
73 19 6
August 7-September 19, 1950
73 19 7
September 26-October 31, 1950


FBI
Series 73

Series Box Folder Folder Title
73 - - File No. 66-04, continued
73 20 1
November 2-December 2 1950
73 20 2
December 6, 1950-January 19, 1951
73 20 3
January 20-March 10, 1950
73 20 4
March 13-31, 1951
73 20 5
April 2-May 4, 1951 (does not include April 13 SAC Letter No. 35)
73 20 6
April 13, 1951
73 20 7
May 5-June 12, 1951


FBI
Series 73

Series Box Folder Folder Title
73 - - File No. 66-04, continued
73 21 1
June 16-July 25, 1951
73 21 2
July 28-September 11, 1951
73 21 3
September 14-October 4, 1951
73 21 4
October 8-December 10, 1951
73 21 5
December 11-29, 1951
73 21 6
January 2-February 29, 1952
73 21 7
March 4-6, 1952


FBI
Series 73

Series Box Folder Folder Title
73 - - File No. 66-04, continued
73 22 1
March 29, 1952
73 22 2
April 1-25, 1952
73 22 3
April 26-May 9, 1952
73 22 4
May 10-29, 1952
73 22 5
June 3-27, 1952
73 22 6
July 1-25, 1952
73 22 7
July 23-August 22, 1952


FBI
Series 73

Series Box Folder Folder Title
73 - - File No. 66-04, continued
73 23 1
August 25-29, 1952
73 23 2
September 3-October 3, 1952
73 23 3
October 7-22, 1952
73 23 4
October 24-November 7, 1952
73 23 5
November 10-21, 1952
73 23 6
December 16-24, 1952
73 23 7
December 19, 1952-January 27, 1953


FBI
Series 73

Series Box Folder Folder Title
73 - - File No. 66-04, continued
73 24 1
January 28-February 10, 1953
73 24 2
February 17-20, 1953
73 24 3
February 24-March 9, 1953
73 24 4
March 10, 1953
73 24 5
March 17-24, 1953
73 24 6
March 31-April 28, 1953
73 24 7
May 1-28, 1953


FBI
Series 73

Series Box Folder Folder Title
73 - - File No. 66-04, continued
73 25 1
June 1-July 29, 1953
73 25 2
August 4-September 17, 1953
73 25 3
September 21-October 14, 1953
73 25 4
October 16-November 25, 1953
73 25 5
December 1-30, 1953
73 25 6
January 5, 1954


FBI
Series 73

Series Box Folder Folder Title
73 - - File No. 66-04, continued
73 26 1
January 11-March 3, 1954
73 26 2
March 3-April 12, 1954
73 26 3
April 14-May 14, 1954
73 26 4
May 18-26, 1954
73 26 5
June 29-July 13, 1954
73 26 6
July 16-30, 1954
73 26 7
June 1-24, 1954


FBI
Series 73

Series Box Folder Folder Title
73 - - File No. 66-04, continued
73 27 1
August 3-17, 1954
73 27 2
August 18-31, 1954
73 27 3
September 1-30, 1954
73 27 4
October 4-27, 1954
73 27 5
November 1-9, 1954
73 27 6
November 12-30, 1954
73 27 7
December 6-30, 1954


FBI
Series 73

Series Box Folder Folder Title
73 - - File No. 66-04, continued
73 28 1
January 4-February 3, 1955
73 28 2
February 4-March 4, 1955
73 28 3
March 8-30, 1955
73 28 4
April 1-29, 1955
73 28 5
May 3-31, 1955
73 28 6
June 1-29, 1955
73 28 7
July 1-August 30, 1955


FBI
Series 73

Series Box Folder Folder Title
73 - - File No. 66-04, continued
73 29 1
September 7-October 18, 1955
73 29 2
October 21-December 9, 1955
73 29 3
#2873, enclosure behind file, November 1955-February 1956
73 29 4
December 13-21, 1955
73 29 5
December 23, 1955-January 31, 1956
73 29 6
February 7-March 30, 1956
73 29 7
April 2-May 10, 1956
73 29 8
May 15-June 26, 1956


FBI
Series 73

Series Box Folder Folder Title
73 - - File No. 66-04, continued
73 30 1
July 3-31, 1956
73 30 2
August 2-September 18, 1956
73 30 3
September 20-November 29, 1956
73 30 4
December 3, 1956-January 29, 1957
73 30 5
February 4-March 27, 1957
73 30 6
April 2-May 16, 1957
73 30 7
May 21-July 2, 1957


FBI
Series 73

Series Box Folder Folder Title
73 - - File No. 66-04, continued
73 31 1
July 6-September 10, 1957
73 31 2
September 13-November 19, 1957
73 31 3
November 20-December 9, 1957
73 31 4
December 10-31, 1957
73 31 5
January 3-31, 1958
73 31 6
February 3-April 1, 1958
73 31 7
April 2-June 17, 1958


FBI
Series 73

Series Box Folder Folder Title
73 - - File No. 66-04, continued
73 32 1
June 23-August 26, 1958
73 32 2
August 27-October 30, 1958
73 32 3
November 4-December 30, 1958
73 32 4
January 6-February 25, 1959
73 32 5
March 3-April 14, 1959
73 32 6
April 17-May 28, 1959
73 32 7
June 2-30, 1959


FBI
Series 73

Series Box Folder Folder Title
73 - - File No. 66-04, continued
73 33 1
July 1-30, 1959
73 33 2
August 4-October 30, 1959
73 33 3
November 2-27, 1959
73 33 4
December 1, 1959-January 29, 1960
73 33 5
February 1-March 31, 1960
73 33 6
April 4-May 31, 1960
73 33 7
June 1-August 24, 1960
73 33 8
September 6-December 29, 1960


FBI
Series 73

Series Box Folder Folder Title
73 - - File No. 66-04, continued
73 34 1
January 4-February 28, 1961
73 34 2
March 1-April 27, 1961
73 34 3
May 1-June 30, 1961
73 34 4
July 6-September, 1961
73 34 5
October 3-November 30, 1961
73 34 6
December 1, 1961-January 31, 1962
73 34 7
February 2-March 30, 1962


FBI
Series 73

Series Box Folder Folder Title
73 - - File No. 66-04, continued
73 35 1
April 2-May 31, 1962
73 35 2
June 4-July 31, 1962
73 35 3
August 1-November 30, 1962
73 35 4
December 4, 1962-January 31, 1963
73 35 5
February 1-May 29, 1963
73 35 6
June 3-August 30, 1963
73 35 7
September 3-November 27, 1963


FBI
Series 73

Series Box Folder Folder Title
73 - - File No. 66-04, continued
73 36 1
December 2, 1963-March 27, 1964
73 36 2
April 2-July 30, 1964
73 36 3
August 3-October 29, 1964
73 36 4
November 2, 1964-January 29, 1965
73 36 5
February 1-March 30, 1965
73 36 6
April 1-June 29, 1965
73 36 7
July 2-August 31, 1965


FBI
Series 73

Series Box Folder Folder Title
73 - - File No. 66-04, continued
73 37 1
September 1-November 29, 1965
73 37 2
December 1, 1965-March 31, 1966
73 37 3
April 4-June 30, 1966
73 37 4
July 1-August 31, 1966
73 37 5
September 6-December 30, 1966
73 37 6
January 4-March 31, 1967


FBI
Series 73

Series Box Folder Folder Title
73 - - File No. 66-04, continued
73 38 1
April 3-May 31, 1967
73 38 2
June 1-July 26, 1967
73 38 3
August 1-September 29, 1967
73 38 4
October 2-November 30, 1967
73 38 5
December 1, 1967-January 31, 1968
73 38 6
February 1-March 29, 1968
73 38 7
April 1-July 31, 1968


FBI
Series 73

Series Box Folder Folder Title
73 - - File No. 66-04, continued
73 39 1
August 3-September 30, 1968
73 39 2
October 1-December 26, 1968
73 39 3
January 2-March 27, 1969
73 39 4
April 1-July 30, 1969
73 39 5
August 5-October 31, 1969
73 39 6
November 3, 1969-March 30, 1970
73 39 7
April 1-July 30, 1970


FBI
Series 73

Series Box Folder Folder Title
73 - - File No. 66-04, continued
73 40 1
August 4-October 30, 1970
73 40 2
November 3, 1970-February 26, 1971
73 40 3
March 1-June 24, 1971
73 40 4
July 1-November 24, 1971
73 40 5
December 6, 1971-March 30, 1972
73 40 6
April 3-July 31, 1972
73 40 7
August 1-November 29, 1972


FBI
Series 73

Series Box Folder Folder Title
73 - - File No. 66-04, continued
73 41 1
December 5, 1972-March 30, 1973
73 41 2
April 3-September 28, 1973
73 41 3
October 2-December 20, 1973
73 41 4
January 1-May 28, 1974
73 41 5
June 3-October 31, 1974
73 41 6
November 1, 1974-April 30, 1975


FBI
Series 73

Series Box Folder Folder Title
73 - - File No. 66-04, continued
73 42 1
May 1-September 30, 1975
73 42 2
October 1, 1975-March 30, 1976
73 42 3
April 2-August 31, 976
73 42 4
September 3, 1976-January 31, 1977
73 42 5
February 2-May 27, 1977
73 42 6
June 2-August 29, 1977
73 42 7
September 6-December 29, 1977


FBI
Series 73

Series Box Folder Folder Title
73 - - File No. 66-04, continued
73 43 1
January 17-June 27, 1978
73 43 2
July 6-December 28, 1978
73 43 3
January 5-May 28, 1978
73 43 4
June 1-December 31, 1979
73 43 5
January 2-March 27, 1980
73 43 6
March 31-May 8, 1980
73 43 7
May 13-October 23, 1980


FBI
Series 73

Series Box Folder Folder Title
73 - - File No. 66-04, continued
73 44 1
Section 318, #4332-4346, October 1980-January 5, 1981
73 44 2
Section 319, #4347-4366, January 23-July 27, 1981
73 44 3
Section 320, #4367-4383, August 1981-February 17, 1982
73 44 4
Section 321, #4384-4409, January 18-September 17, 1982
73 44 5
Section 322, #4410-4419, August 30-December 6, 1982
73 44 6
Section 323, #4420-4450, December 11, 1980-April 11, 1983
73 44 7
Section 324, #4451-4469, June 10-November 18, 1983
73 44 8
Section 325, #4470-4499, December 7, 1983-August 20, 1984


FBI
Series 73

Series Box Folder Folder Title
73 - - File No. 66-04, continued
73 45 1
The Communist Front Movement in the United States, March 1955
73 45 2
Communist Work Among American Youth, December 1954
73 45 3
Communist Party Funds and Finances, May 1954
73 45 4
Section 4, #x172-14, pp. 377-458, December 1935-January 1945
73 45 5
Section 1, JUNE Mail, March 28,1950- March 18, 1952
73 45 6
Section 2, JUNE Mail, April 18, 1952-November 22, 1961
73 45 7 FOIPA Request Letters and Receipts