LOS ANGELES, Calif. – Officials say two rare early editions of “Mein Kampf” signed by Adolph Hitler could go for more than $20,000 at an online auction on Thursday.

Nate Sanders, owner of Nate D. Sanders Auctions in Los Angeles, says he knows he’ll catch flack for putting the rare 1925 and 1926 books up for bid. But he says that it’s a very rare item and a piece of history.

Before taking power in Germany, Hitler was jailed for trying and he dictated “Mein Kampf,” two volumes of autobiography and anti-Semitic manifesto, to Rudolf Hess while behind bars to raise money for his criminal defence.

Both volumes’ fly-leaves feature Hitler’s signature with best wishes to his friend for the Christmas season.