When the Bennett Pump Co., moved from the building they had used since 1924, they called me and invited me to come up to Muskegon to search their literature.
One of the things I acquired was a 15" tall box of hundreds of original, 1922-1935 blueprints. My assumption is most pump companies did the same as the blue print showed. My other assumption is that when Texaco made a large purchase of pumps, they sent the pump company the specification of how they wanted the pump painted, where the decals were to be placed, and depending on where the pump were headed for, where the lead signs went. Some towns/cities/states had the lead signs on the fronts, some on the sides, and some didn't care.
Notice the picture shows exactly where the decal is to be placed (in this case the Bennett 810, the only visible pump made by Bennett). I have other blueprints showing Indian Gas, and Fire Chief decal specifications.
One other assumption, since almost all 10 gallon visible pumps were the same height, the specifications shown on the Bennett blueprint would be very close the specifications used by the Wayne Pump Company.
Note: These Texaco blueprints are from the Texas Company. If the station you are restoring was owned by a individual and not by Texaco, he probably purchased his pumps from a local petroleum equipment company. This company had pumps sitting in the warehouse, still in the original crate they were in when they came from the factory, and...they were painted red and had no signage. Possibly not the red used by Texaco, but red was the standard color for gasoline. He would then call his Texaco distributor and have them bring put a globe and some signs/decals.
The blueprints are for sale and they cover air meters, gas pumps and oil/grease dispensers if any one is interested, email me for information.