The I.O.O.F. Building of Buffalo, in Buffalo, Oklahoma, is an International Order of Odd Fellows building that was built in 1917 in what is now known as Plains Commercial Style architecture. Also known as Harper County Journal Office, the building was listed on the National Register of Historic Places in 1983. It served historically as a meeting hall and as a business. The building is 100 feet (30 m) by 25 feet (7.6 m). Its nomination to the National Register describes its importance as: