Original: In 1983, French scholar George Wellers was one of the first to use German data on deportations to estimate the number killed at Auschwitz, arriving at 1.613 million dead, including 1.44 million Jews and 146,000 Catholic Poles.
Simplified: In 1983, French scholar George Wellers was one of the first to use Nazi data on deportations to estimate the number killed at Auschwitz.