Stickyback Photographs and Stickyback photographers
Kamera - Preus museum / DigitaltMuseum
Polyfoto hi-res stock photography and images - Alamy
Noto – Polyfoto (1998, Paperback catalogue, CD) - Discogs
Photo-Sleuth: Sepia Saturday 178: Polyfoto, The Natural Photography
Polyfoto – Carl Johann Rixen | Dansk fotohistorisk Selskab
Polyfoto hi-res stock photography and images - Alamy
Vintage Photo Lab en Twitter: "The Soho was one of the most popular early single lens reflex cameras, way back in 1909! #EvolutionOfCamera http://t.co/j8Vw2jB3E4" / Twitter
Photo-Sleuth: Sepia Saturday 178: Polyfoto, The Natural Photography