I know it's dweebish thing to ask, but what camera(s) did she use most frequently? Some look like them might be made with a Rollei, while others look more wide-angle than a 75mm or 80mm lens would give (yet less than what a Rollei Wide would render). Yet others look like a short telephoto might have been used. Hassie? What? Seems to me she'd want something relatively quiet for some of these.
Not yet, no. But I plan to. The Schultz book post-dates Revelations by about eight years. He refers to it in several places.
It's worth noting that Revelations is an estate-authorized work, whereas the Schultz effort is not. Accordingly, there was no assistance rendered by the estate to the author (and no included Arbus photo illustrations either). But the upside to this is that Schultz was able to delve far more deeply into areas that are most definitely off limits. Or even taboo.
Bosworth is a fairly conventional biographical work. It's an interesting read and establishes a common framework of understanding. Schultz is a psychological biography, and is quite the different animal. Bosworth attempts to answer the what. But Schultz attempts to answer the why, a far more difficult task.
"They are the proof that something was there and no longer is. Like a stain. And the stillness of them is boggling. You can turn away but when you come back they’ll still be there looking at you."
— Diane Arbus, March 15, 1971, in response to a request for a brief statement about photographs