Hitchcock Chronology: Jean Marsh
- 26th - Principal photography begins on Frenzy, which will last 13 weeks, with location scenes filmed at Covent Garden Market. Mid-afternoon, Hitchcock interviews actresses Patsy Byrne and Jean Marsh for the one remaining uncast role of Monica Barling — Marsh is selected. The first day of filming wraps at 6:15pm.
- Alfred Hitchcock's Frenzy: The Last Masterpiece (2012) by Raymond Foery, pages 49-50