Here’s a 2009 PSA celebrating the 100th anniversary of Lotta’s birth. NB: the website mentioned at the end of the PSA, www.drlotta.ca, is no longer functional.
And here’s a PSA that Lotta narrated in 1975:
Dr. Lotta Hitschmanova (1909-1990)
"This is Lotta Hitschmanova. Please give generously to the Unitarian Service Committee, 56 Sparks Street, Ottawa 4."
I also find her voice and the USC Commercials evoke Christmas for some reason. The Public service announcements from USC truly resonate in my childhood memories.