Estimates of the number of people who died here vary widely. Complete records of how many died at Dachau do not exist. Three weeks before the United States Army reached the camp, most of the important records were removed or burned. A few days before the Americans arrived, Germans began evacuating prisoners. But poor organization prevented all from being removed. Prisoners from the Buchenwald concentration camp had been sent to Dachau. When the last train was found, 2,000 of the 4,000 prisoners on it were dead. Between 1933 and the liberation by Americans in 1945, about 228,930 prisoners had been sent to Dachau. This includes about 7,000 who had just arrived from Buchenwald. This number is close to that given by a US Seventh Army report of 229,000. 