Re:Watkins... The California State Library has a great collection of Watkins' mammoth prints. Historian Kenneth Star gave a photo class I was enrolled in years ago a tour of the library's photography collection. With gloves Star turned page after page of Watkin's (and Muybridge's) huge contact prints. Lot's of Yosemite. We were allowed to view the work close, with good light and with no glass. MMMMM.... If one was serious he could probably make an appointment for a viewing. "Carlton Watkins The Art of Perception" can be purchased at discount prices from the usual sources. Excellent monograph.