 He was the founder, along with Albert Petrak, of the International Piano Archives (initially named the International Piano Library but later changed due to state law).Benko managed the non-profit institution for two decades, attracting Spanish virtuosa Alicia de Larrocha to act as the President of the corporation, and building an enormous collection of recordings, scores, memorabilia and associated matter concerning concert pianists.In 1977 Benko donated the collections to the University of Maryland, College Park, where they formed the nucleus of the International Piano Archives at Maryland.