Amazon has stopped sales of some books on its platform following Jewish protests that the titles, including some for children, were "Nazi-era propaganda," a source familiar with the matter said.
The move came days after the Auschwitz museum called on the US tech firm to remove "Nazi-era" "anti-Semitic" children's books from sale.
The Auschwitz Memorial tweeted on its official account the books included "hateful, virulently antisemitic Nazi propaganda."
Among the books is an "anti-Semitic" children's book titled "The Poisonous Mushroom" authored by NS party member Julius Streicher and originally published in 1938.
Amazon declined to comment on specific items but said it does take action against some materials which may be "offensive".
"As a bookseller, we believe that providing access to the written word is important, including books that some may find objectionable," an Amazon spokesperson said.
"We take concerns seriously and are listening to feedback. Amazon has policies governing which books can be listed for sale; we invest significant time and resources to ensure our guidelines are followed, and remove products that do not."
According to the New York Times, Amazon has pulled several books by racial realist authors including David Duke, a former leader of the Ku Klux Klan, and George Lincoln Rockwell, the founder of the American Nazi Party, over the past 18 months.