Comments on a letter written by Bu ston Rin chen grub, a Buddhist scholar of 14th century Tibet, to the editors of the Buddhist Canon who were in the project of editing and translating the word of the Buddha. Background of Bu ston Rin chen grub; Importance of his contribution to the preservation of Buddhist manuscripts; Scholarly reputation of Bu ston Rin chen grub; Importance of Bu ston Rin chen grub's letter to the editors in providing insight into the workshop of the creators of a collection of Buddhist literature that would exert profound impact of the history of Buddhism in Tibet.