Series 1: Robert Spira correspondence 1960-1981
Subseries 1.1: Primary Correspondents 1961-1978
Arrangement
Correspondence with Bruce C. Berndt 1967 1970-1975
Correspondence with Robert Edward Bowen 1961-1970 1978
Correspondence with Eckford Cohen 1967-1971 1973-1974
Correspondence with Stephen Fisk 1964-1969 1972
Correspondence with Lowell Schoenfeld 1965-1970 1972
Subseries 1.2: Miscellaneous Correspondence 1960-1981
Arrangement
Correspondence 1960-1963 1970-1975
Correspondence 1964-1965
Correspondence 1966
Correspondence 1967
Correspondence 1968
Correspondence 1969
Correspondence 1970
Correspondence 1971
Correspondence 1972
Correspondence 1973
Correspondence 1974-1975
Correspondence 1976
Correspondence 1977-1978
Correspondence 1979-1980
Correspondence 1980
Correspondence 1981