“Two Unpublished 19th Century Ethiopian Letters: From Emperor Tewodros to Sir Robert Napier, and from Däǧǧazmač Nǝguśe to Naib Hasän Bey”, Aethiopica, vol. 11, no. 1, pp. 61–67, Jul. 2008, doi: 10.15460/aethiopica.11.1.145.