When did Paul come back to Canada? For what purpose?

Paul was really popular and world renowned. He kept his personal connection hidden until he felt comfortable enough to return,

Magnus Eisengrim did not bring his famous display of illusions to Canada until 1968. His fame was now so great that he had once had his picture on the cover of Time as the greatest magician in history. The Autobiography sold quite well here, though nobody knew that its subject (or its author) was a native. It was at the end of October he came to Toronto for two weeks.