Birnbaumer, Lutz, 1971-1975

This series of professional correspondence is divided into two subseries to represent Rodbell's own filing system. The first subseries is arranged by year and covers 1961 through 1998. The material primarily consists of letters between Rodbell and various scientists and organizations. The second subseries is arranged alphabetically by correspondent's name. Most of the individuals listed were Rodbell's students or colleagues in search of professional advice or recommendations. Both subseries primarily contain professional letters, but there are also a handful of postcards.

Within folders, the materials are arranged chronologically, with stapled "packets" of correspondence ordered by the date on the top letter. Despite Rodbell's filing separation by year and by individual, there is some overlap and no name index of correspondents exists. Therefore, researchers searching for correspondence from specific individuals should consult both subseries.