I know for sure that someone sang The Balled of Joe Hill at Walter Reuther's funeral in 1970, because I watched the service on television. I can't say for certain, but my guess is that the singer was Utah Phillips.

...Regarding the Wolverine, Amtrak's train 350/351 bore that name back in 1979, and a quick check of the Amtrak website shows me they're still running a Wolverine. (That was the morning departure from Detroit to Chicago, and vice-versa; the afternoon counterpart was The Twilight Limited.