November 22, 1963. 12:30 pm. 8 seconds change the history of America. Bullets originating from The Texas Book Depository strike President John F. Kennedy fatally wounding him. Originally built in 1901, the building on the corner of Elm and Houston streets changed hands several times housing both farm equipment and groceries until The Texas School Book Depository Company consolidated most of its business into the seven-story red brick warehouse in 1963. The distributor of schoolbooks across the Texas and Oklahoma hired Lee Harvey Oswald on October 16, 1964 as a warehouse clerk. Just over a month later, according to the Warren Commission report, Oswald fired the three shots at President Kennedy from his perch in the Depository. When police converged on the depository at 12:36, they found a sniper's nest, rifle, and three bullet casings on the sixth floor, all obscured by stacks of books and boxes made necessary by a re-flooring project on the rest of the floor. Since that day many questions and theories have been raised surrounding the events of the assassination, Oswald's involvement, and the Oswald's own death caused by Jack Ruby just two days later. On president's day 1989 the sixth floor opened as a museum dedicated to answering some of those questions as well as highlighting the history of President Kennedy, with the seventh floor gallery being added in 2002. The lower five floors currently house the Dallas County Administration Building. In 1993, the Dealey Plaza district, including the depository, was dedicated as a National Historic Site.