sources i get the impression that this article needs more work what's with there only being one general reference the united states holocaust memorial museum encyclopedia entry the other one being specifically about the female guards the article's content doesn't even seem perfectly match the information of this one reference ushmm in early the ss constructed a gas chamber in ravensbr ck near the camp crematorium the germans gassed between and prisoners at ravensbr ck before soviet troops liberated the camp in april wikipedia in the autumn of the ss constructed a gas chamber near the crematorium the germans gassed several thousand prisoners at ravensbr ck before the camp's liberation in april also the link to the mercurynews com article is dead