Back in the 60s all I used for light hosteling type touring were tubular (sew up) tires. Clement "Elvezia" was the standard, cheap cotton, throw away model. By "throw away" I mean they only cost $3-$4 so if you had a flat you'd just buy a new one. The Clement "Campionato del Mondo" was a higher end silk model with a relatively wide cross section adequate for light touring. Those we'd usually snip the stitching, patch and re-sew. I wish we had sealant back then!
As the poster below, we'd always carry a spare tire or two and do the patching and sewing at home.
Nostalgic ad from
American Cycling magazine, April 1966 ...
Yes, I'm a hoarder!