A good list. Just look at these dozens and dozens of spree killings in the US prior to the 1960s!
You wanted to know if there were spree killing before video games and rock and roll, that list shows there are. As for quantity, as populations grow the number of nutters does too, also as bureaucracy grows how well recorded these things are grows. There were lots of bad people doing things before Jack the Ripper but he usually gets called the first serial killer because he was the first one to make the papers.