Welcome to Oldgas! Once you figure out what year your pump was produced and you have picked a brand you can go to the globe book and figure out what size globe the company used during those years.
Thats the way to do a period correct pump. If that is not what your shooting for then do as you please.
What companies where in business as Phil said many. The large companies come to mind, but there was a lot of small chains,and mom and pops selling under large brand names. Do some history gathering for your state and you would be surprised how many options you have that was near you. If your put it together to sale there is always the sure thing. Resale Texaco.
