An unassuming little volume that nevertheless packs quite a punch. Address Unknown by Kathrine Kressmann Taylor is a powerful anti-Nazi short story, written in 1938. It is a series of letters between two business partners, one a Jew based in San Francisco, the other a gentile who has returned to his native Germany and taken up the Nazi cause.
It is surprisingly short, but equally as impressive. And quite devilishly plotted. I cannot explain fuller, or else I would give the plot away, but I have to admit that I found this book lived up to its reputation. It was hugely influential when it first came out, providing one of the first glimpses into just how bad things were for Jews in Germany. After the war it became somewhat forgotten but a new edition has been released and certainly deserves a wider audience.