 He was 95.From 1957 to 1962, Bartos was an architecture partner of Frederick John Kiesler (1890–1965), an odd association considering that Bartos was pragmatic and mild-mannered and Kiesler was unorthodox and cerebral.Nevertheless, Bartos joined Kiesler in minor projects, such as a two-story art gallery in New York's Carlyle Hotel as an early realization of Kiesler's "Endless House" concept.