Trevenen J. Holland & Henry M. Hozier (authors) 1870 Title page for "Record of the Expedition to Abyssinia Compiled by Order of the Secretary of State for War" by Major Trevenen J. Holland, C.B. Bombay Staff Corps and Captain Henry M. Hoziewr, 3rd Dragoon Guards, Vol.II (War Office, 1870)
Book title page Google Books Chapter XXXIV "Photographic Department" p.357-369 - This chapter provides a highly detailed account of the inventory of equipment, how it was packed, the crates used on each mule and how the equipment performed during the expedition.