Member Directory The AAS maintains a membership directory to facilitate member interaction and to support the conduct of official Society business. Search directory for: Filter Results By Clear Filters Type of Science State VA (7) Facet State City Alexandria (1) Arnold (1) Baltimore (34) Belmont (1) Bethesda (1) Boulder (1) Catonsville (2) Chevy Chase (1) Columbia (1) Crownsville (1) Elkton (1) Ellicott City (2) Gaithersburg (3) Germantown (1) Greenbelt (16) Laurel (7) Marriottsville (1) Mountain View (1) Philadelphia (1) Potomac (1) San Marcos (1) Severna Park (1) Silver Spring (2) Socorro (1) Tempe (1) Washington (4) Facet City Membership Class Facet Membership Class Division Facet Division