MgM, I'm looking basically for traditional folk songs with easy choruses. Pete Seeger has some because he is a master song leader but there are so many songs that are traditional that people would learn if they could sing the chorus easily.   This is specifically true to the monthly event that I attend where each participant sings one song solo and another leading the group. This method was used in the Sixties at
"Songmakers" meetings in Los Angeles and we are trying this in Georgia. I want to emphasize traditional material rather than recently complicated written songs by   contemporary folkie types.

Rounds are especially useful. It is a given that members of our monthly gathering
love to sing. I think that developing awareness of folk songs can be met by this process of accessibility bringing audiences in on choruses.

They don't have to all be trad. Tom Paxton's "Ramblin' Boy" goes over well as does
Woody Guthrie songs such as "Do Re Me". "Goodnight Irene" is another example.
Many of the songs you would think everyone knows may have more complicated choruses than realized. Woody Guthrie managed to write many songs of this nature including "So Long It's Been Good to Know You" or "This Land".

A line or two in a chorus seems to me to be ideal. "Tom Dooley" comes to mind because it was so popularized.

The songs don't have to be familiar, just easy choruses to sing.