Leftist groups that could use stamps?
I hope this isn't too off-topic, but it is in the spirit of the show and I thought the posters here might have ideas for me, as I am coming up blank. My uncle amassed a large stockpile of stamps (not forever stamps, most are around 30 cents.) He can no longer live independently, and we are cleaning out his apartment. I've been tasked with finding a person or group doing work he would approve of to donate them to. Doesn't need to be an official non-profit, just a group who would appreciate the donation.
He is a leftist/union guy. He was kicked out of his first college for protesting the politically-motivated denial of tenure to a marxist historian professor. He wrote his PhD dissertation on union organizing in steel factories, but ended up pausing that for about 15 years to work in said factories. He is a voracious reader so a small leftist press could work, too. I would really appreciate any ideas. Bonus if the group is based in Chicago or LA. Thanks!