The Crypt of Civilization intrigued America and was replicated by many others. George Edward Pendray, a public relations executive in the mid-1930s, created the Westinghouse time capsule for a public ceremony for the 1939–40 New York World's Fair, in order to raise awareness of his company's repository vault. The rocket-shaped vessel, with a exterior made from the metal alloy cupaloy, contained a Pyrex inner tube in which articles were placed. Pendray’s design was originally called a "time bomb", but the name was later changed to avoid an association with warfare. Pendray chose the name "time capsule" as it encapsulated within a container man-made objects and was intended to be opened in 61 centuries. A second capsule was created by Westinghouse for the 1964 New York World's Fair and an exhibit was set up to show the contents and history of the time capsules. Both these capsules are intended to be available to the people of 6939 A.D. only and are not to be opened before then.