1977. Information Sheet. Lecture by Demarco: From Hagar Qim to the Ring of Brodgar. Ref. Demarco's Edinburgh Arts lecture tour in North America.

1977. Information Sheet. Lecture by Richard Demarco: From Hagar Qim to the Ring of Brodgar. Demarco's Edinburgh Arts lecture tour in North America, January - March 1977. With reference to Edinburgh Arts 1977.