Local Chapters of ATOS are the organizations that really do all the work of preserving and presenting Theatre Organ to the public. Please lookup the Chapters in your area and get involved!

Chapter State/Prov. City
Susquehanna Valley Pennsylvania York
Dickinson Theatre Organ Society Delaware Wilmington
Columbia River Washington Vancouver
Sooner State Oklahoma Tulsa
NORTHERN MICHIGAN Michigan Traverse City
Saint Louis Missouri St. Loius
Spokane First Nazarene Washington Spokane
Puget Sound Washington Seattle
Hudson Mohawk New York Schenectady
Manasota Florida Sarasota
Santa Barbara California Santa Barbara
NorCal California San Francisco
San Diego California San Diego
GREAT SALT LAKE Utah Salt Lake City
Great Lakes Bay Michigan Saginaw
Sierra California Sacramento
Rochester Theatre Organ Society (affiliate) New York Rochester
Old Dominion Virginia Richmond
Pittsburgh Area Theatre Organ Society (Affiliate) Pennsylvania Pittsburgh
Valley of the Sun Arizona Phoenix
River City Nebraska Omaha
Pine Tree Maine Old Orchard Beach
New York New York New York City
Land O' Lakes Minnesota Minneapolis / St. Paul
Dairyland Wisconsin Milwaukee
Los Angeles California Los Angeles
London and South of London England, General London
Bluegrass Kentucky Lexington
Lansing Theatre Organ, Inc. (affiliate) Michigan Lansing
Kingston Canada Kingston
Kansas City Missouri Kansas City
Joliet Area Illinois Joliet
Garden State New Jersey Jersey City
Central Indiana Indiana Indianapolis
Houston Texas Houston
Orange County California Fullerton
Red River Theatre Organ Society North Dakota Fargo
Motor City Michigan Detroit
Detroit Theatre Organ Society (affiliate) Michigan Detroit
Rocky Mountain Colorado Denver
North Texas Texas Dallas / Ft. Worth
Pikes Peak Colorado Colorado Springs
Western Reserve Ohio Cleveland
Ohio Valley Ohio Cincinnati
Chicago Area Illinois Chicago
Chicagoland Illinois Chicago
Cumberland Valley Pennsylvania Chambersburg
Cedar Rapids Iowa Cedar Rapids
Free State Maryland Catonsville
Piedmont North Carolina Burlington
Alabama Alabama Birmingham
Binghamton Theatre Organ Society, Inc. New York Binghamton
JESSE CRAWFORD Montana Billings
Atlanta Georgia Atlanta
Connecticut Valley Connecticut
Central Florida Florida
South Florida Florida
EASTERN MASSACHUSETTES Massachusetts
MAGNOLIA Mississippi
Delaware Valley Pennsylvania
LA CROSSE SCENIC BLUFFS Wisconsin
Packerland Wisconsin
Australia Felix Australia-Wide
Cinema Organ Society (affiliate) United Kingdom