Thanks for posting this Jason.
About 10 years ago when the Royal Photographic Society still had it's HQ in Bath and the collection was housed there I did some voluntary work with the curator at the time Pam Roberts. I was also lucky enough to meet Larry Schaaf who was a good friend of Pam's. I ended up being there for the best part of a year. One of the more pleasurable tasks I was given was to take all the Fox-Talbot photos of which there were many and to catalogue them. The upside to this was I got to handle the lot and to marvel at this obsession of ours and it's origins.