In this interview Walter Orr Roberts discusses the Mesa Laboratory and surrounding site, including the Fleischmann Building, and its architect, I.M. Pei. Roberts speaks briefly about his experience designing the High Altitude Observatory (HAO) and how that informed planning of the Mesa Laboratory. Roberts goes into detail discussing the structural and aesthetic design of the Mesa Laboratory and surrounding site; the relationship with the architectural team; Pei’s architectural influences; and how the rooms and spaces have been utilized throughout the years.

In this interview I.M. Pei, chief architect of the Mesa Laboratory and the Fleischmann Building, speaks passionately about his inspirations; the placement of the structures and the relationship between building and setting; the design process, down to the selection of materials; and how the Mesa Laboratory marked a very important turning point in his career.

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