Did a quick search and found http://www.thestarlightstudio.com/hhppage.htm
Imagine my surprise when scrolling down the page I see Hurrell using "my" 4x5 camera.
What does strike me is that he went through phases driven by both prudence/practicality (working through the stuff he had on hand and as it seems was typical until recently, using a very limited stable of lenses) and by taking advantage of improvements in the tools available as the old film ran out.
I do agree fully that the light and lenses had to be of primary concern, the lighting choice does seem driven by practicality as much as anything, the constraints the slow films imposed had to make it tough for both Hurrell and his subjects.
It really is a luxury to be able to shoot at 1/400th with bright strobes and faster films.