The Mountain Charging Epidemic

A common theme in the comment threads accompanying any video of a hit batsman charging the mound inevitably some commenter will say that the brawl was ultimately the fault of the DH rule. Is there a quick way to know if the conventional wisdom is correct did the AL have more mountain charges than the NL for the 49 seasons that the split DH rules were in effect or is the answer still waiting to be discovered by someone with a lot of time and a whole lot of old newspaper clippings? The problem seems to be one about the data set as far as I can tell mountain charges are not play indexable nor are brush back pitches or bench clearing.