Early American scene
On the Blarney Pilgrims podcast John Carty was talking about the session developing in the 50s and 60s (London primarily, but probably simultaneously in other places too) by Irish expats who would get together and share tunes and keep the music going. And that beforehand the music lived in house dances and then, as the clergy wanted to get people out of the houses and into more controlled environments, ceili bands.
So what about in America? Where, for example, was Francis O’Neil hearing the tunes he collected? Are we still talking about house dances, or early examples of sessions, or what?
Directions to references and resources as well as answers appreciated.