This section of the Wolff Archive contains the correspondence of Franklin Merrell-Wolff (Franklin F. Wolff), which covers a span from c. 1916 to 1984. For the most part, the letters here are sorted by correspondent, although some notable letters penned by Wolff have been posted separately. Letters in which Wolff imparts his advice and philosophy are generally dated before 1950, with the exception of the letters in his correspondence with Robert Briggs, which were authored in the 1960s.

Wolff was not a prolific letter writer, and in fact, of the 430 letters posted here, he wrote only eighty. One might ask why letters not authored by Wolff are included here, particularly since some relate to the mundane matters of ordinary life. In response, it should be noted that Wolff came to realize that it is possible to learn not only from his writings and recordings, but also from the details of his life—some of which the correspondence here serves to provide.