89 years ago the Nazis burned the library of the Institute of Sex Research. What research was lost and what survived?

by 2_Boots
Picklesadog

Here's a wonderfully detailed answer from /u/19scohen on a similar question I asked a few years back:

https://www.reddit.com/r/AskHistorians/comments/c5rczv/comment/es4tq7s/