And there is video!
Amazingly, it was the second time in modern baseball history that this has happened. On June 23, 1946, in the first game of a doubleheader at the Polo Grounds, Marv Rickert and Eddie Waitkus of the Cubs did it against the Giants. The Cubs lost the game 15-10.
Other cool inside-the-park home run factoids:
Brooklyn's Jimmy Sheckard hit inside-the-park grand slams in consecutive games on consecutive days in 1901, the only player in major league baseball history to do so.
On April 27, 1949, Pete Milne hit an inside-the-park grand slam for his only career home run.
On July 25, 1956, Roberto Clemente became the only player to ever hit a walk-off inside-the-park grand slam in a 9–8 Pirates win over the Cubs.
On September 2, 1975, Johnnie LeMaster hit the only inside-the-park home run to be recorded in a first career major league at-bat, against future Hall of Famer Don Sutton.
On October 4, 1986 at the Hubert H. Humphrey Metrodome, Greg Gagne of the Twins tied a modern-era major league record by hitting two inside-the-park home runs against the White Sox. Only 18 players in major league history have performed this feat, with Gagne being only the second since 1930.
On May 26, 1997, Sammy Sosa of the Cubs hit an inside-the-park home run in the top of the sixth inning against the Pirates. In the bottom of the sixth, Tony Womack also hit an inside-the-park home run, marking the unusual occurrence of opposing teams hitting an inside-the-park home run in the same inning.