Illustration of W.R. Baker’s “Tourist’s Developing Tent” and “Baker’s Changing Tent,” reviewed in Amateur Photographer (21 July 1893), 40.
Illustration of Claringbull’s portable changing bag and developing tent, reviewed in Photographic News (29 May 1891), 398.
" This Is Your Parish, Mackay "
Tamsui, Taipei, 1872 (?).
Bottom of the photo shows the portable darkroom setup of wet plate processing.
Source: The black bearded barbarian; the life of George Leslie Mackay of Formosa (1912), p.29.