I don't know how he got the name Wildfire; maybe he was a crazy baserunner, or maybe he had bright red hair.
As you can see, he was an outstanding power hitter for his time; this year, he became the first of five players in baseball history to have 20+ doubles, triples, and home runs in the same season.
The Cubs were led by their outstanding outfielders, Schulte and Sheckard.