On August 5, 1912, Cardinals first baseman Ed Konetchy hit two inside the park home runs in an 8-4 win over the Dodgers in Brooklyn. The first inside the park round tripper for Big Ed came with two men on in the second to give the Cards a 3-0 lead over the hometown Dodgers. His second of the day came with a man on in the fifth, a couple batters later Rebel Oakes parked one over the wall to cap off a 5 run inning for the Cardinals. It would be all the scoring the team needed, the Dodgers tacked on 3 in the bottom of the fifth and another in the ninth but they couldn't get passed the Redbirds and Konetchy. Konetchy finished the day 3 for 5 with 5 ribbies. Big Ed hit 74 home runs over 15 years in the big leagues, 28 of those home runs were inside the parkers. Konetchy is currently tied for thirteenth on the all time list for most inside the park home runs.
Baseball reference didn't have the box score, but I did find it in an old newspaper archive. You can check it out here: http://news.google.com/newspapers?id=i9VbAAAAIBAJ&sjid=nFINAAAAIBAJ&pg=6058%2C313673 I find the ad next to the Cardinals story exceptionally odd. Sign of the times I guess.