In addition to square, this directory lists other types of dance groups, including contra, folk, ballroom, handicapped, and polka. Entries give the type of club, level of proficiency, location, and a phone number for over 10,000 dance clubs throughout the world. It is organized geographically and updated annually. Berman, Leslie, and Heather Wood, eds. Grass Roots International Folk Resource Directory , 3rd ed.
Listings cover all types of folk music worldwide.
The Hendrickson Group, c1989 Not seen by this writer. Minneapolis Public Library, Music Department Staff. An Index to Folk Dances and Singing Games . American Library Association, 1936. This volume indexes the contents of 113 folk dance and game books.