Not only that, though. I've started reading photo journals and magazines from the late 1800's, ie pre-Kodak. In fact, one issue from 1884 gave details of one of Eastman's original patent submissions. Another article I read was about going out for a demonstration (we'd call it a review today) of the original Kodak box camera with 100 exposures inside that you sent back for processing. (The newspaper editor receiving the demo was rather dubious that the product would ever catch on!) Anyway, my point is that there was no Kodak and although there were small vendors of materials it was an enthusiast market and they all made their own stuff. There was an atmosphere of experimentation and sharing as they each found the next great thing. It was all incredibly "high-tech" stuff. But also, the amatuer enthusiasts could be, and were, just about as deep into it as the corporate giants (such as they were) of the time. And, you might be surprised at how little the technology has changed since that time, other than the major leaps like panchromatic dyes. It's amazing what those guys knew!
...want to be certain a proven replacement is available in case Kodak's B&W division is dismantled.