All the manuals on that site seem to be VERY old. The copyright date for Jabsco the manual toilet manual is 1997. Raritan water heater manual is even older. "Wilcox-Crittenden toilet" doesn't mention the model (it's for a VERY old Headmate)... etc. You can download manuals for just about everything from the mfrs' websites...so unless you're trying to salvage equipment too old to be worth salvaging, you're better off going to the mfr IMO.