Unfortunately, the information is for historical interest only as the paint #'s from the vendors are no longer viable for mixing paint. Additionally, because of the normal scanner distortions and operation of computers and screens, the visual appearance of the colors may not be accurate in all cases,
Those needing to re-paint their cars can go to their local Ditzler/PPG jobber with the color name and paint number off the firewall tag of their vehicle. Ditzler's Color Library will scan their master reference chip (assuming they made the color for refinishing) with their computer spectrometer. This wil produce the current mixing formula to re-create the original color. This information is provided to the jobber at no charge, but he is not allowed to pass on the formula to the public. The idea is that the Color Library information is dealer support and used to make a paint sale.
Rinshed-Mason may operate a similar type facility to support their ICL jobbers under similar conditions. I have no info on DuPont, Sherwin-Williams or other motor vehicle paint makers of the period.
You also need to find out if the color being created will come out in a lacquer or enamel.