Series 1: Correspondence, circa 1950-1992

The correspondence is indexed by correspondent's last name (or organization name) and organized into three sub-series as follows. Correspondence is also located in other series where appropriate.

Subseries a. General.

Consists of letters from professional associates, occasional writers, friends, and graduate students. The collection includes carbon copies of outgoing correspondence. Significant correspondents include Rolf Dahlgren, Leo C. Hitchcock, Arthur H. Holmgren, Ernst Mayr, James Reveal, Ernest Small, Frans Stafleu, and William C. Steere.

Subseries b. NYBG Correspondence.

Includes outgoing and incoming correspondence and memoranda of NYBG staff relating to scientific and administrative work. Of special interest are communications with Bassett Maguire and the correspondence of Julius Cohn regarding a letter of Dr. Henry Gleason, dated 15 November 1952, in which Gleason details the history of his work as an ecologist. This letter was published as "A Letter from Dr. Gleason" Brittonia, 39(2), 1987, pp.205-209, with a short preface by Cronquist. The original copy of Gleason's six-page letter to Cohn is attached to the Cohn/Cronquist correspondence.

Subseries c. Russian Correspondence.

Consists of outgoing and incoming correspondence with colleagues in the former Soviet Union, some of which is typewritten in Russian (Cyrillic). There are seven files of Cronquist's correspondence with Armen Takhtajan (1957 to 1992), including four pertaining to specific projects or publications undertaken in collaboration. One file pertains to the Soviet physicist and dissident Andrei Sakharov relating to constituent opinions of the Botanical Society of America members regarding a position statement of the American Association for the Advancement of Science on the Sakharov case in 1973.