IWW is anarchist/labor. They still exist, see their website for publications https://store.iww.org/
Kerr published THE BIG RED song book https://www.amazon.com/Big-Red-Songbook-Charles-Library/dp/1629631299/ref=sr_1_2?crid=3KAVENSMJ57H1&dib=eyJ2IjoiMSJ9.ibcLUMqKHbTe6z6hJMarp2H_fEUQv2TbwGhIZ8NZhVJMtWeugEkKovZze-05A7Rj_JUA0aqpjYDP2gF9aL0vRLmG3xGWlYrgW2wI_fdjQvY.zdYfLXS4VnWT2jWLlNo88NdgBKd598h4WdqhPWu1qQQ&dib_tag=se&keywords=iww+red+songbook&qid=1750470653&sprefix=iww+red+songbook%2Caps%2C172&sr=8-2