On September,17, 2013 I gave a talk at the Library of Congress on The Jewish Reception of Copernican Thought. The event was graciously sponsored by the Rare Book and Special Collections Division and the Hebraic Section of the African and Middle Eastern Division. The talk was held in the Library's magnificent Rosenwald Room, and featured a display of rare books that included the Library's first edition copy of De Revolutionibus Orbium Coelestium. 

This copy has a very interesting provenance. It was once owned by Sir Edward Sullivan, Lord Chancellor of Ireland, who died in 1886, and after his death, it was sold at Sotheby's Auction in London for the princely sum of 10 pounds to an agent of Alfred T. White. White was a philanthropist book collector and trustee of the First Unitarian Church of Brooklyn, and on his death in 1921, his wife, Annie Jean, inherited the book. Annie Jean sold the book to the Library of Congress in 1945 for $950. The library seems to have gotten a rather good deal. Five years ago, a copy of this book was sold at Christie's Auction House in New York for $2.2 million.

A transcript of the talk is available here.