Petrie, John. Miniature Souvenir Portrait of John Petrie. Circa 1950. Housed in a blind-stamped leather book-like box with brass clasp, and accompanied by a calling card of Mrs. Petrie, inscribed and signed on the verso by Mr. & Mrs. Petrie to Dr. Grossman. The portrait may have been a memorial kept by Mrs. Petrie after her husband’s passing. John Albert Petrie co-founded the Mysto Magic Co. and the Petrie & Lewis Company, both famous manufacturers of magic apparatus. He also invented practical products, including a limousine lock and an automatic electric starter for early automobiles.