Woo!!! Very, very excited for this one- I have a few preliminary suggestions, a list which I'll probably add to throughout the week.
To start off with:
Phil Ochs - needs connection, could do with a little more bio
Tommy, Paddy, Liam Clancy, or Tommy Makem (the Clancy Brothers) - need more bio, photos & connection
Leadbelly - One of the greats; definitely needs to be connected, if any folks from the Black Heritage Project would like to take a look into his tree (if no one else does, I may eventually get around to it, but likely not before next week)
Malvina Reynolds - needs tree/connection
Paul Robeson - looks good to go!
There's always Dylan, but we had him a couple months ago, & much I like Dylan, I think it'd be good for us to have a little more variety. Same goes for Cohen. If we want the more famous, Johnny Cash is always an option.
Art Garfunkel & Paul Simon, the former is unconnected; both could do with improved trees.
Harry Chapin - looks good to go.
Joan Baez is set to unlisted, but Mimi Fariña, her sister & fellow folksinger is up (though definitely needs more bio)
John Prine - died last year; would be nice to have him up. Profile could be improved somewhat, but mostly looks good to go.
Gordon Lightfoot - Needs bio, connection, photo
Glenn Yarbrough - could do with extended bio; otherwise good to go
Earl Scruggs - Needs bio cleanup & photo, but is connected
I will be adding to this list soon, as I have a ton of artists who I think should be added to WikiTree (Hedy West, Bert Jansch, Kate Wolf, Sonny Terry & Brownie McGhee (who needs a tree), among many others, including a long list of non-Americans, none of who I've managed to find on WT yet).