First Mails
Regular mail service in Chad began soon after the French occupation of the area, with a post office established at Fort-Lamy in 1905. Additional offices were opened at Abeche (1909), Amm et Timan (1910), Ati (1909), Bousso (1910), Fada (1920), Faya-Largeau (1920), Mandjafa (1910), and Tchekna (1910).
Mail used stamps of French Congo until 1915, then stamps of Ubangi Shari, whose overprints read "OUBANGUI-CHARI-TCHAD".
Read more about this topic: Postage Stamps And Postal History Of Chad