Just found another great resource with a solid list of contemporary member galleries like Jack Shainman and David Zwirner:

http://www.artdealers.org/members.contemporary.html

And here is the “Collector’s Guide” to the Nation’s Leading Art Galleries (wow!):

http://www.artdealers.org/dnloads/adaa_guide.pdf

Just found another great resource with a solid list of contemporary member galleries like Jack Shainman and David Zwirner:

http://www.artdealers.org/members.contemporary.html

And here is the “Collector’s Guide” to the Nation’s Leading Art Galleries (wow!):

http://www.artdealers.org/dnloads/adaa_guide.pdf