Envelope holder with integral focusing screen of wood. For cameras taking block form slides. Quarter plate. Houghtons Limited. Houghton's envelope adaptor
Eleven envelopes for Ensign cut films (Austin Edwards emulsion) and seven plate envelopes. Houghtons Limited. With original box. Envelopes for Houghton's Adaptor
Envelope holder with integral focusing screen of metal. For cameras taking single metal slides. Quarter plate. Houghtons Limited. Houghton's envelope adaptor
Nine envelopes for Houghton envelope adaptor, film version. Houghtons Limited. With original carton. Houghtons Envelopes
Houghton envelope adapter for Sanderson camera for 3 1/4 x 4 1/4 inch cut films. Houghton envelope adapter for Sanderson camera
