Here are some crazy facts about inside the park homers:
Ed Delahanty of the Philadelphia Phillies hit two inside-the-park home runs (out of four home runs total) in one game against the Chicago Cubs. Ed Konetchy did the same on August 5, 1912. Playing for the Minnesota Twins, Greg Gagne hit two inside-the-park homers in the Metrodome on October 4, 1986.
Jimmy Sheckard completed a phenomenal feat in 1901, hitting inside-the-park grand slams in consecutive games on consecutive days with the Brooklyn Superbas (later the Brooklyn Dodgers). Sheckard is the only person in Major League Baseball history to do so.