Those are some woderful vintage slides!
This one is of my mother in law, from the late 50's, Kodachrome
Here's a Kodachrome I took in '72 with an Olympus Pen FT half frame
My grandma, again the 70s, probably Agfachrome
Pop Photo's September 1957 issue had the Most Photogenic Girl In the World as picked by Ed Sullivan and shot by Peter Gowland - they included 600,000 color Super Ansochrome slides (World's Fastest Color Film - Exposure Index 100). Luckily the slide was still in the magazine, though it - and the magazine itself - hasn't been stored in the dryest most archival way.