I grew up in Racine, Wisconsin Enduro so I wasn't that far from Chicago. I think the Buckinghams had a lot of potential, but drugs might have ruined their rise to success. I really liked their song "Susan."
I remember "Gloria" from The Shadows of Night. That song has been sung by a lot of singers/groups. But I still like The Shadows of Night version the best.
You're right about Sha-na-na. They were big in Wisconsin. I never cared for them, though. I wasn't a big fan of '50's music.