With his brother Antoine (1810-1897), Arnauld d'Abbadie (1815-1893) explored Ethiopia from 1838 through 1850. He wrote a multi-volume account of his travels, though only the first volume was published, in Paris in 1868. The remaining text was finally published as Studi e Testi Nos. 286 and 287 in 1980, edited by Jeanne-Marie Allier.
His papers were eventually given to the Capuchin Alberto Rincón-Gallardo in 1942, and then passed to the Vatican in 1966. Of the 19 containers, only 2 have been digitized. There is a detailed description of 19 online.
Biblioteca apostolica vaticana. (2011). Guida ai fondi manoscritti, numismatici, a stampa della Biblioteca vaticana. Biblioteca apostolica vaticana. p.332
