Last night, idly googling, I discovered the Folly Cove Designers, and their awe-inspiring lino block prints.
This is just a small selection; more can be found at the Folly Cove Designers, and still more at the Sarah-Elizabeth Shop.
The Folly Cove Designers started from a design course taught by Virginia Lee Burton, and were active from 1940 to 1969. Sarah Elizabeth Holloran was a member, and after the group disbanded she opened her shop. The site includes a great photo essay of the printing process.
There's a Life Magazine article from 1958 here, which includes this photo in which everyone seems to be wearing something printed. (It does become an obsession...)
And this is a print showing the printmaking process!