Patrick Redford, writing for Deadspin:

Miller made at least one movie per year starting in 1950, and he would tour ski towns, showing the movie in the evenings and charging admission. He was raising a son whose mother had died of cancer, but his movies quickly became popular and he was able to raise three kids. He essentially invented an entire genre of outdoor filmmaking, and he produced over 750 movies, the majority of which were about skiing, before leaving Warren Miller Entertainment in 2004.