A vast and historically valuable trove of Holocaust-era documents, long thought destroyed during the second world war, has been found hidden in a wall cavity by a couple renovating their Budapest apartment. The haul of 6,300 documents are from a 1944 census that was a precursor to the intended liquidation of the Hungarian capital’s 200,000 Jews in Nazi death camps. Brigitte Berdefy, co-owner of the apartment overlooking Hungary’s parliament, said in August a worker detected paper after jamming a screwdriver through a crack in the wall....