Starting his own business ventures in Denver in 1903, Fritchle's foremost accomplishment was his manufacturing and selling of electric automobiles through the Fritchle Automobile and Battery Company. Boasting his cars' ability to run 100 miles on a single battery charge, Fritchle was able to maintain a successful business until 1917 when the self-starter for gasoline cars was perfected. From there, Fritchle went on to start a business in wind electric plants for rural farms, and to patent many inventions ranging from storage batteries to cooking apparatus. Oliver Fritchle was an important figure in Colorado's history because of his many innovative endeavors in Denver, many of which were very forward thinking and ahead of the times. His business dealings also offer an enlightening glimpse into Denver's automotive industry in the early twentieth century. Much of the collection's material covers the full extent of his family and professional life. Types of material include family papers and genealogies, business documents, correspondence, invention designs and patents, sales material, three dimensional objects (windmill and automotive pieces), and photographs.