View-Master is the trademark name of a line of special-format stereoscopes and corresponding View-Master "reels", which are thin cardboard disks containing seven Stereoscopic 3-D pairs of small transparent color photographs on film. It was originally manufactured and sold by Sawyer's. The View-Master system was introduced in 1939, four years after the advent of Kodachrome color film made the use of small, high-quality photographic color images practical. Tourist attraction and travel views predominated in View-Master's early lists of reels, most of which were meant to be of interest to users of all ages. Most current View-Master reels are intended for children. History 1919–1956: early photo services Edwin Eugene Mayer worked as a pharmacist at Owl Drug store in downtown Portland, Oregon, after serving in the U.S. Army in World War I. He built up a photo-finishing business there, and bought into Sawyer's Photo Finishing Service in 1919 with the help of his father August Mayer, his fiancée Eva McAnulty, and her sister Vi McAnulty. Edwin described how he started the business in a letter dated April 1, 1954: "Suffice to say that in 1919, what little it was, was purchased with borrowed ($3,500) money from Dad, aided by about $1,600 in insurance money Eva got when her father died and which was left in permanently, and $1,600 borrowed from Vi and repaid, along with Dad's notes, within a few years." As the business grew, Ed Mayer incorporated in about 1926, taking on partners Harold and Beulth F. Graves, Thomas and Pauline Meyer, and Augusta and Raymond F. Kelly, renaming the business Sawyer Service, Inc. The company relocated to a large two-story building at 181 Ella St., near Morrison Street in Portland, Oregon. The company was producing photographic postcards and album sets as souvenirs by 1926, when Harold Graves joined Sawyer's. Graves handled marketing for the products while Mayer ran the business. Later, photographic greeting cards were added to the Sawyer's product line, marketed to major department stores. Sawyer's was the nation's largest producer of scenic postcards in the 1920s and the future View-Master viewer eventually became an extension of the two-dimensional cards. The company took the first steps towards developing the View-Master after Edwin Mayer and Graves met with William Gruber, an organ maker of German origin trained by Welte & Sons and an avid photographer living in Portland. Mayer and Gruber had both developed devices for viewing stereo images, but