The papers include degrees from Trinity College, Dublin; certificates of hospital training; Haran's appointment as Medical Officer in the East Africa Protectorate; various reports on the plague in Nairobi, Kisumu, Mombasa, and the Gold Coast; his work during the war as Deputy Principal Medical Officer of the East African Protectorate; and other reports and correspondence. Of note are a map of Kisumu showing plague areas, and a broadside on the plague in the Gold Coast. The collection also contains a manuscript on St. Patrick written in 1937.