Toronto. The marketeers were at it again in this advertisement for Kodak (page 90) back in the August 29th, 1960 issue of LIFE magazine. Kodak made its money on film, paper, and supplies, so it went to great lengths to encourage their use.
As an example, this Kodak LIFE ad promoted the use of photos to enhance letters to others, pre dating modern digital images and emails by decades.
Thanks to George Dunbar for the idea and ad.