Relevant archives?

[curioussoul]

How many of the old archives are still left to be studied? I know Mattogno has received a huge portion of the Auschwitz Museum Archives from anonymous helpers, but much still remains completely unknown and unpublished. I'm guessing no one adjacent to revisionism will ever gain access to those parts of the archive again?

But what other archives are still left to be explored and are potentially open for visit from interested scholars? Obviously the old GRU archives in Russia contain important information on jews left in the soviet union, but those are unlikely to ever be opened up.

Are there any revisionist historians who have sought after specific archival sources that are known to contain holocaust-related information? I remember in Graf and Mattogno's book on Treblinka they talked to sources in Hungary who implied that relevant documents had been destroyed by order from higher-ups, relating to the Hungarian Operation in 1944.