This correspondence all orientates around the person of Guthrie, to whom Frances initially wrote to a close family friend, mutually affected by the loss of Francis, and then in Guthrie's role as literary executor of FMC's published and unpublished works. After the death of Frances in 1960, Guthrie continued in his role as literary executor to both FMC and FCC. In this capacity the Cornford's eldest surviving son Christopher also corresponded with Guthrie, as did briefly the youngest son, Hugh.

The final letter in the file, from Jocelyn Brooke to Frances, written in the 1930s, is an anomaly, found amongst FMC's lecture notes. It is a witty and charming thank you note to his hostess, and has no connection to Guthrie or to FMC's literary estate.