The North American Sartre Society (NASS)

The North American Sartre Society is dedicated to the study of all aspects of the work and thought of Jean-Paul Sartre. The Society does not endorse any one theoretical orientation in Sartre studies, but rather encourages and supports work from a variety of perspectives. The Society does so principally by sponsoring and organizing a conference, held roughly every year-and-a-half, in which scholars from across North America and around the world...

Here's a link to the website :

http://sartresociety.org/