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 (-) OR (1) Facet State City Medford (1) Portland (3) (-) Ashland (1) Facet City Membership Class Full Emeritus Member (1) Facet Membership Class Division DDA (1) DPS (1) (-) HAD (1) Facet Division Showing 1-1 of 1 results Robert Burkhardt Full Emeritus Member Affiliation State/Province OR Country United States