Luigi Ghirri - The Complete Essays 1973-1991: I've just started to dive into this one. My significant take away so far, Ghirri advocates a photography detached from the fine art print. He sent his photographs to a lab to be developed and apparently did little editing to them. They are a straightforward documentation of his subjects of interest. He's not interested in style, he says, just the content of the image.
Robert Adams - Art Can Help: I love the way Robert Adams writes about photography even if I struggle a bit to get his aesthetic. This is a collection of short essays that haven't seen broad publication before. Using Edward Hopper as a jumping off point he explores a number of photographs and describes what he thinks makes them worth looking at and, yes, redemptive.