Yes, please do on the trademark info. if you have it available. I spent a couple of hours last night trying to find when companies began using "Trade Mark Reg." to no avail. I have some advertising labeled this way and then some from the same company with no trade mark (which, by the way, at some point the words were joined together to just be "trademark")identification. It is my understanding that all advertising a company put out had to have the mark once they registered it. But, I do not know that for a fact.
Collecting the Mississippi companies:
Billups, Southland, Rose Oil,Crystal Oil, Barq's