re: #79 De Kolta Chair
It’s a little remembered fact that the Soviets never mentioned liberating Auschwitz and many other concentration camps until the Brits pretty much shamed them into doing so after the war was over.
Majdanek’s liberation was highly publicized, and that was one of the first ones. Wikipedia page on Auschwitz says that the lack of publicity about its liberation was a combination of factors; one of a series of camps already liberated, conference at Yalta going on at that time, Soviet’s downplaying the plight of the Jews. And I expect that due to destruction of records and buildings and removal of a lot of the prisoners it might not have been clear what the extent and importance of the site was.