Thanks to Bob Chudy (Korea 1972-77) who told me this fact the act of signing the Peace Corps Bill took place at Hammersmith Farm, a Victorian mansion in Newport, Rhode Island. It was the childhood home of Jackie Kennedy, and where the wedding reception was held for JFK and Jaqueline Bouvier. During his presidency, Kennedy spent so much time at Hammersmith Farm that it was referred to as the ”Summer White House.” In late  September 1961, during one of these stays, Kennedy signed Public Law 87-293, the Peace Corps Act of 1961.