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 Facet State City Baltimore (1) Bethesda (1) Cambridge (1) Middletown (1) Moscow (1) Facet City Membership Class E (1) Facet Membership Class Division HEAD (1) SPD (1) Facet Division