From International Robin Hood Bibliography
Robin Hood Rock, Keighley ([s.l.]: [s.n.], [s.d.]). Photographic postcard (monochrome). 137 x 87 mm. / HTN collection.
Robin Hood Rock, Keighley ([s.l.]: [s.n.], [s.d.]). Photographic postcard (monochrome). Verso. 137 x 87 mm. / HTN collection.
[s.n.].
Robin Hood Rock, Keighley. [s.l.]: [s.n.], [s.d.]. Photographic postcard (monochrome). 137 x 87 mm.
Citation