What is the connection of McDonald's hamburger chain CEO Ray Kroc, to the 1958 film Auntie Mame?

Patrick Dennis was the nom de plume of the author of Auntie Mame: An Irreverent Escapade (1955), which in 1958 was made into the film Auntie Mame, starring Rosalind Russell.

Edward Everett Tanner III (May 18, 1921 – November 6, 1976), was the real name of the author who, after a successful career as a novelist, left writing in the 1970s and became a butler. One of his employers was McDonald's CEO Ray Kroc (October 5, 1902 – January 14, 1984), who never knew that his butler "Tanner" was the acclaimed author.

After the book was published, Rosalind Russell created the title role on Broadway in 1956, and reprised it in the film. In 1966 Angela Lansbury triumphed in the role as Mame, a musical, on Broadway, and in 1974 a seemingly mis-cast Lucille Ball starred in the widely panned screen version of the musical.