11 science and tech artifacts that are up for grabs

From one of the earliest Apple computers to letters from Charles Darwin and Albert Einstein, collectors can buy a piece of history on Oct. 22 when Bonhams holds its history of science auction. For an estimated $300,000 to $500,000, you could walk away from the New York auction with an Apple-1 computer built by Steve Wozniak in 1976. Also up for grabs is the extensive archive of pioneering astronomer, photographer, and telescope designer George Willis Ritchey, with an estimated auction value between $450,000 and $550,000. Other hot items include the Charles Darwin letter on Barnacle sex, with an estimated value between $20,000 and $30,000. A 6-inch thick Manhattan Project viewing window, valued at $150,000 to $250,000, will also be auctioned.   The auction house estimates that the 288 items in the sale will raise around $2 million when they go under the hammer. Follow James Rogers on Twitter @jamesjrogers