[Caption title]: Dear Friend, On April 21, 1970, a teacher at Jefferson Davis High School in Montgomery distributed copies if "welcome to the Monkey House"...
$200 · Offered by Between the Covers
New York: ACLU, 1970. Unbound. First edition. Three page (three sides of two leaves) printed letter with Vonnegut's facsimile signature. Folded as mailed, envelope a little sloppily opened else near fine. Accompanied by a return envelope and pledge card laid in, which are fine. A solicitation by Vonnegut to donate..... More
Found via Rare Books Intel, a search across rare-book dealers, auction houses and marketplaces worldwide.