I've posted this to the main board, won't be offended if the elves
move it to BS. But since much of the loved music of the
folk revival was political singer-songwriter, thought this
may be of general interest.

I hope the name ART YOUNG is known to many mudcaters. His political
cartoons for THE MASSES (if you've seen the movie REDS you will be
aware of this magazine of literary and social importance published
1911-1918, whose adherents included TEN DAYS THAT SHOOK THE WORLD
reporter John Reed, and other labor agitators, socialists, poets
et.al.) are among the greatest of the genre - a forerunner of HERBLOCK, RON COBB, and others.

FANTAGRAPHIS has just published a magnificently illustrated
book about Art Young: TO LAUGH THAT WE MAY NOT WEEP - The Life &
Times of Art Young.
To Laugh that we may not Weep
   http://www.fantagraphics.com/artofartyoung/

Young published two auto-biographies, which are delightful to read:
Horace Liveright, New York, 1928 ON MY WAY
Sheridan House, New York 1939: HIS LIFE AND TIMES
readily available on the secondary market.

Other of his published work:
1894 Hell Up to Date
1897 Author's Readings
1901 Through Hell with Hiprah Hunt (DOVER reprint 2016)
1927 Trees at Night
1930 Socialist Primer
1934 Art Young's Inferno: A Journey Through Hell Six Hundred Years
    After Dante.
1936 The Best of Art Young. Introduction by Heywood Broun.

much information and examples of his work will be found through
google, and in Wikipedia.

Cheers, Thomas.