The collection contains correspondence, bills, receipts, broadsides, and business advertisements pertaining to Martin Bros. Circus, located in Castle Creek, Broome County, New York. The circus was owned and operated by Clayton Hawkes and Carroll Miller. Its tent shows toured upstate New York beginning in the 1930s, with the company's winter quarters in Castle Creek. Clayton Hawkes and his wife Madge also ran other circus shows, including Clayton's Combined, Bogart and Hawkes, and the Great American School Show.