Blatz advertising piece with an odd inscription. " Waler No 3 is Having a Little Snort With Waler No 2 right now & Thinking About Waler No 1." There is what looks like a reply from another person (Waler No 3?): " I'll mow you down if you steal away more waiters on me.". Signed postcard with a man and woman wearing weird metal headbands. Names didn't seem to turn up anything that I noticed. Last piece is a fun letter sent in 1914. It must have been interesting to set up and print this piece back then.
The couple in the second postcard look like some sort of "Artists", of the sort who want to be known for their Art and never break into the big time. The last one was entirely hand-set and must have been a pain in the neck. It may have come from a high school graphics class, or a vocational outfit.
Regarding the couple ... https://theatrememorabilia.co.uk/shop/signed-memorabilia/t-lang-autograph-signed-picture-actor-1930/
The postcard is from Oberammergau. That would be the actress Maria Schilcher who played Mary in the Passion Play. And that should be Anton Lang, who often played Jesus, with her. https://en.wikipedia.org/wiki/Anton_Lang Debora
The last is an invitation to the 6th annual Country Fair dance held by the Dancing Skule (aka Dancing School) at a Knights of Columbus hall. AI says: " The term "Dancing Skule Knights of Columbus" appears to refer to social dancing, dinner dances, and, in some historical contexts, teenage dances hosted by various local councils of the Knights of Columbus, a Catholic fraternal organization." Debora
The image from the invitation, taken from a late Victorian carte de visite. Doesn't have much to do with a hayseed Jonas Turnipseed but must have been something the printer had on hand. Debora
I can find a Margaret Wille in Milwaukee whose father was a lithographer. Were the pieces found there? Debora
Ohio. Mailed to someone in Youngstown. Postmark is hard to read but it might have been mailed from Pennsylvania.