Clifford Walton: History of the British Standing Army. Verlag Harrison and Sons, 1894, ISBN 978-5-87942-674-8 (reprint), S. 336–337 [1]
Vivian Dering Majendie: On Military Breech-Loading Small Arms. 1. März 1867 in: Notices of the Proceedings at the Meetings of the Members of the Royal Institution. S. 69 [2]