Toronto. Sawyers of View-Master fame were justifiably proud of using Kodak products. This link is to a review of the talk we heard on September 20, 2006 by Mary Ann and Wolfgang Sell, members of the NSA and View-Master experts.
An advertisement on page 14 in LIFE magazine for November 15, 1963 touts both Sawyer Tru-Vue toys and Kodak Color film. While both Sawyer and Kodak are American as is LIFE magazine, all brands are well known and popular here.
Thanks again to George Dunbar for alerting me to this bit of history unearthed during his research.