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 (-) MD (1) Facet State City Bethesda (1) Edgewater (1) Laurel (1) (-) Rockville (1) Facet City Membership Class Full Member (1) (-) Full Emeritus Member (1) Facet Membership Class Division (-) DDA (1) Facet Division Showing 1-1 of 1 results P. Seidelmann Full Emeritus Member Affiliation State/Province MD Country United States