ICADS conducts a bi-annual World Congress on Art Deco in cities where a member society nominates itself as a host. In 2005, when the Art Deco Society of New York hosted the World Congress, the Art Deco Society of Washington hosted a pre-Congress program.
The next World Congress will be held in Shanghai in 2015, at a time not yet determined. In 2017, the World Congress will be held in Cleveland, Ohio.
Art Deco Society of Boston
http://bostonartdeco.org/art_deco_society_of_boston.html
Art Deco Society of California, USA
http://www.artdecosociety.org/
Art Deco Society of Los Angeles, USA
http://adsla.org/info/content/welcome-los-angeles-art-deco
Art Deco Society of New York, USA
http://artdeco.org/
Art Deco Society of the Palm Beaches, USA
http://www.artdecopb.org/
Art Deco Society of Washington, USA
http://www.adsw.org/
Chicago Art Deco Society, USA
http://www.chicagoartdecosociety.com/
Detroit Area Art Deco Society, USA
http://www.daads.org/
Friends of Fair Park – Dallas, USA
http://www.fairpark.org/
Miami Design Preservation League, USA
http://www.mdpl.org/
Sacramento Art Deco Society, USA
http://sacartdeco.org/
Tulsa Historical Society, USA
http://www.tulsahistory.org/
Twentieth Century Society USA
http://20thcs.org/
Art Deco Montreal, Quebec Canada
http://artdecomontreal.com/
ArtDecoToronto.ca, Canada
http://www.artdecotoronto.ca/
Canadian Art Deco Society, Vancouver
http://www.canadianartdecosociety.org/
Instituto Art Déco Brasil, Rio de Janeiro
http://www.artdecobrasil.com/home.php?url=home&idioma=en
Twentieth Century Society, London, UK
http://www.c20society.org.uk/
Art Deco & Modernism Society, Melbourne, Australia
http://www.artdeco.org.au/
Art Deco in the Tropics – Innisfail, Australia
http://www.artdeco-innisfail.com.au/
Art Deco Society of New South Wales, Australia
http://www.angelfire.com/retro/artdeconsw/
Art Deco Society of Western Australia, Perth
http://www.artdecowa.org.au/
Art Deco Society, Auckland, New Zealand
http://artdeco.org.nz/
Art Deco Trust, Napier, New Zealand
http://www.artdeconapier.com/
Twentieth Century Heritage Society of New South Wales, Australia
http://www.twentieth.org.au/i.html
Durban Art Deco Society, South Africa
http://www.durbandeco.org.za/
Historic Shanghai, China
http://www.historic-shanghai.com/
Louisville Art Deco
http://www.louisvilleartdeco.com/
Art Deco Society of Virginia
http://artdecova.org/
Pittsburgh Art Deco Society
http://pghartdeco.org/
(The below are to be links to PDF articles on the World Congresses extracted from Trans-Lux)