Visitors interested in a wonderful, well-written history on the light fixtures of Caldwell and Co. will enjoy the Smithsonian Institution Libraries website and digital collection of his work. Started in 1895, Caldwell and Co. made electric lights that aesthetically fit into the interiors of buildings without taking away from their traditional architecture. This creative ability made them popular among prominent architectural firms and wealthy clients of time. The "Browse the Collection" link at the top right of the homepage will lead visitors to choose the following categories by which to browse: "Product", "Client", "Project", and "Architect". The Products are as varied as "clocks", eight different types of "lighting", "religious objects", and "ironwork". A General Keyword Search, with images or without, is also available on the same page as the browse option. At the bottom of the website is a list of over two dozen buildings where Caldwell's more important works are located, and as it turns out, New York City is where most of them can be found.