- FondsAllen - Papers of Frank James Allen
- SeriesE - Cambridge Antiquarian Society material
- FileE2 - Photographs labelled 'Harlock [?] stereoscopic photographs printed 1936'
- Item1 - Two black and white photographs labelled 'H. Hall & cycle Harlock'
- Item2 - Four black and white photographs labelled 'Archdeacon Yorks Harlock'