[Photo-zincographs in On photo-zincography and other photographic processes employed at the Ordnance Survey Office, Southampton].
Longman, Green, Longman, Roberts, & Green[Photo-zincographs in On photo-zincography and other photographic processes employed at the Ordnance Survey Office, Southampton]. Plate no. 2.: Plan stand & board, front view, Fig. 1. Back view (Partition removed), Fig. 2. Front view (Board removed), Fig 3. Centre portion, Fig. 4. Side portion, Fig. 5. Photo-Zincograph. 31 x 24.5 cm.