A missionary school at Rubengera by Lake Kivu, Rwanda, coloured picture postcard, date unknown [around 1900], unknown photographer, published by the Bethel Mission Bielefeld; source: Zenodot Verlagsgesellschaft mbH, Zeno.org, http://www.zeno.org/Bildpostkarten/M/Kolonien,+Mission/Afrika/Ruanda,+Missionsschule+in+Rubengera+am+Kiwusee.