Boy, I hope you got permission from Arbus and the others. You could be in a peck of trouble if you didn't.
They are fully credited in the site as source imagery. I didn't literally reproduce their images. I used the images as inspiration for graphic images -not photographic images- and I'm not selling them. This is more along the lines of paying predecessors respect. Copyright law does not prevent people from paying homage to those who have gone before. I respect your concern however.
Regards, Shawna http://lightwriting.net