True the HJ shop manual covers most, if not all of the Allstate maintenance/service info. I do have the Allstate parts list of what you mentioned too.
What I have found in working on this car are the quirky little things - should it have pearlite or rubber escutcheons on the door handles? Should it be Autolite or Delco Remy electrics? It would appear Autolite on this early '52, sans voltage reg, coil, battery and plugs which should be Allstate branded.
There are a number of other little things but I've found a lot of answers here and as an IT employee I am willing to donate my time to assist in moving the data if a decision is made to do so. But as you pointed out, who has the final word on that decision? Regardless, I offer my help.