GVW & other critical specs should be on a placard attached to the TT. As far as literature, most of that comes from the manufacturer of the system such as Dometic, Suburban, Norcold, etc and most of that is online.
'09 Pacific Coachworks Tango 276RBS
95 Lance 880 Truck Camper
'91 F350 Dually 2WD CC 7.5L (76K Original miles!)
AirLift Bags, Reese Titan hitch, Rancho 9000X