Question: What company manufactured and sold the product that Charles "Chuck" Harrison was most famous for updating? 
Context: Rainbow Crafts Company, Inc. or, Rainbow Crafts was a toy manufacturing company created and operated by Noah McVicker and his nephew Joseph McVicker as a subsidiary of the midwestern soap company, Kutol Products.  The company manufactured Play-Doh, a modeling compound for children.  Rainbow Crafts operated under the McVickers from 1956 until 1965 when it was sold to General Mills with all rights to Play-Doh.  In 1971, Rainbow Crafts and Kenner Products (both subsidiaries of General Mills) merged, and, in 1987, Tonka Corporation bought both subsidiaries.  Hasbro currently manufactures Play-Doh. Charles "Chuck" Harrison (born September 23, 1931 in Shreveport, Louisiana) is an American industrial designer who was a long time resident in Chicago until 2015.  He was the first African-American executive to work at Sears, Roebuck and Company, starting in 1961 as a designer and eventually becoming manager of the company's entire design group.  He was involved in the design of over 750 consumer products, including the portable hair dryer, toasters, stereos, lawn mowers, sewing machines, Craftsman power tools, the see-through measuring cup, fondue pots, stoves, and the first plastic trash can, which has been credited with changing the sound of trash collection day.  Perhaps his most famous achievement was leading the team that updated the View-Master in 1958, designing the classic Model F View-Master. The Locomobile Company of America was a pioneering American automobile manufacturer founded in 1899.  It was one of the earliest car manufacturers in the advent of the automobile age.  For the first two years after its founding the company was located in Watertown, Massachusetts.  Production was transferred to Bridgeport, Connecticut in 1900, where it remained until the company's demise in 1929.  The company manufactured affordable, small steam cars until 1903, when production switched entirely to internal combustion-powered luxury automobiles. Locomobile was taken over in 1922 by Durant Motors and eventually went out of business in 1929.  All cars ever produced by the original company were always sold under the brand name Locomobile. Blue Bell Creameries is an American food company that manufactures ice cream.  It was founded in 1907 in Brenham, Texas.  For much of its early history, the company manufactured both ice cream and butter locally.  In the mid-20th century, it abandoned butter production and expanded to the entire state of Texas and soon much of the Southern United States.  The company's corporate headquarters are located at the "Little Creamery" in Brenham, Texas.  Since 1919, it has been in the hands of the Kruse family.  Despite being sold in a limited number of states, as of 2015 Blue Bell is the fourth highest-selling ice cream brand in the United States as a whole. The Gordon–Van Tine Company Historic District is a nationally recognized historic district located east of downtown Davenport, Iowa, United States.  It was listed on the National Register of Historic Places in 2017.  The Gordon–Van Tine Company manufactured pre-cut, mail-order homes in this facility, beginning around 1916.  It was incorporated as a subsidiary of the U.N. Roberts lumber company in 1907.  They began by selling construction materials to builders, but by 1910 they offered house plans and became one of the first companies in the United States to offer fully pre-cut houses.  The customer could choose from a variety of floor plans, finishes, design features, and equipment choices.  The lumber for the houses came from company mills in Washington state and Mississippi.  They sold an estimated 54,000 homes under the Gordon–Van Tine name, and another 20,000 under the Montgomery Ward name.  The company remained in operation into the post–World War II housing boom when it was sold to a Cincinnati salvage firm that liquidated it. Walker Electric Trucks were battery-powered vehicles built from 1907 to 1942 in Chicago, Illinois and Detroit, Michigan.  Initially designed and manufactured by the Walker Vehicle Company (not to be confused with the Walker Motor Car Company) in Chicago, they were bought by the Anderson Electric Car Company of Detroit in 1916, then sold to Commonwealth Edison of Chicago in 1920, and last to York & Towne in 1933.  In addition to the trucks the company manufactured the Chicago Electric Car.  Several of their trucks were long in service, surviving the brand, in some cases, by decades.  A few of them are now on display in museums or, in the case of one exported to New Zealand, still "in service" with its original owner Orion New Zealand Limited. 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 color photographs on film.  It was manufactured and sold by Sawyer's. The Meriden Firearms Company of Meriden, Connecticut, USA manufactured small arms from 1905 to 1918.  Meriden manufactured 20 varieties of hammer and hammerless revolvers with an output of 100 handguns a day in 1906.  In addition to revolvers the company manufactured shotguns and rifles. WangDAT was a magnetic tape data storage company founded in 1988 by Ben C. Wang.  This was Dr. Wang's third startup company that he founded that manufactured tape drives.  The company manufactured Digital Data Storage drives, which store computer data on Digital Audio Tape media.  The company was acquired by Rexon in 1991. J.D. Adams & Company was founded in 1885 by Joseph D Adams who invented the first leaning-wheel pull grader and was based in Indianapolis.  The company manufactured construction machinery including sheepsfoot rollers, dozers and graders from its factory.  The company catalogues also listed products by Acme Road Machinery Company though the association is unknown beyond the product listings.  In 1955 LeTourneau-Westinghouse purchased J.D. Adams & Co and continued to operate under the name until 1960.
Answer: Sawyer's