The first time I saw an O. Winston Link picture (I think it was in Aperture), I thought to myself, "That can't be available light!" I had no idea how right I was.
Later, I saw a picture of Link and his assistant with their equipment. they had four huge "flashguns", each of which seemed to hold 20 large bulbs.
BTW, I've made sure my wife doesn't take advantange of my when I become more senile - none of my pictures is remotely salable!