American Science and Surplus is a seller of surplus and educational goods, many of which are obscure or odd. AS&S is also known for its humorous, hand drawn catalogs. Items range from oscilloscopes to reproduction fossils, Soviet military surplus parts and radio-controlled toy rats. Some examples of recent humorous entries include:
American Science and Surplus was founded "around 1937." It has existed in many forms since its original conception as a means of supplying the general public with scientific equipment. Over the years many of the same products, as well as the store's original purpose, remain.
Currently there are three American Science & Surplus retail stores, located in Chicago and Geneva in Illinois and in Milwaukee, Wisconsin. The stores offer a much wider inventory than the catalogs.