Roll film of Peter's camera. David Henderson Houston (born June 14, 1841; died May 6, 1906), originally from Cambria, Wisconsin, patented the first holders for flexible roll film. Houston moved to Hunter in Dakota Territory in 1880. He was issued an 1881 patent for a roll film holder which he licensed to George Eastman (it was used in Eastman's Kodak 1888 box camera). Houston sold the patent (and an 1886 revision) outright to Eastman for $5000 in 1889. Houston continued developing the camera, creating 21 patents for cameras or camera parts between 1881 and 1902. In 1912 his estate transferred the remainder
Kodak Stereo Camera Realist format. This allowed Kodak Stereo Camera owners to use most accessories and services originally designed for the Stereo Realist. It was the second best selling stereo camera of the 1950s era, eclipsed only by the Stereo Realist. Though it lacked a rangefinder the Kodak stereo camera is often considered to be easiest of the 50s stereo cameras to use. Unlike the Realist, the Kodak had a self-cocking shutter. Like later model Realists it had built in double exposure prevention which could be overridden by the manual shutter cocking lever located on the bottom of the camera. Releasing the shutter