Section V includes transcriptions of letters sent, and the originals of letters addressed, to Tessitori and to his family as well. The names most frequently encountered are George Grierson, John Marshall, Hermann Jacobi, Ernst Leumann, Paolo Emilio Pavolini, Carlo Alfonso Nallino, Luigi Suali, Mario Vallauri, Vijaya Dharma Suri, Kiśora Dāna and Rāma Karṇa.
The documents concerned are the following: Scholarly letters received, 1911-19 (AP V/1); Scholarly letters sent, 1912-19 (AP V/2/1-3); Letters from the Asiatic Society of Bengal, 1914-19 (AP V/3); Private letters received, 1913-19 (AP V/4); Private letters sent, 1916-19 AP (V/5/1-3); Letters from Vijaya Dharma Sūri (AP V/6); Letters from Indravijaya Upadhyaya (AP V/7); Letters received after Tessitori’s death, 1920-25 (AP V/8).