People filled the Arlington Arts Center Monday evening, May 5, to mark the Arlington Sister City Association's 20th anniversary of its first partnership, with Aachen, Germany. But that wasn't the only reason for the party: ASCA also used the occasion to publicly launch an oral history project, tracing the history of the organization and its possible role for the future of Arlington and the five international communities it has befriended: Aachen; Coyoacan, Mexico; Reims, France; San Miguel, El Salvador; and Ivano-Frankivsk, Ukraine.