Richard Hendrickson wrote: "Ted's right; the earliest photo of a car with the rectangular red Swift emblem is dated 8-49. Earlier cars, dating back to the 1930s, had "REFRIGERATOR" stenciled to the right of the doors and "SWIFT REFRIGERATOR LINE" above the reporting marks to the left of the doors."
Richard and Ted, thanks for the correction I had forgotton about the 1930s scheme - the dangers of firing an answer off the top of my head while on travel.
