In case you're interested in how the government was keeping your secrets all the way back in 1791, Sotheby's will be auctioning off a first edition of the first U.S. Census signed by Thomas Jefferson, the Secretary of State at the time. The document will be a part of the James S. Copley Library: Magnificent American Historical Documents auction on April 14th, and is expected to sell for between $50,000 and $70,000. It lists the population of the nation's 13 states, the southwest territory and "Washington District," which had a population of 35,691, including 15,365 "Free white females including heads of families." You can see some of the document in the e-catalogue. [Via 1010Wins]