Original vintage industrial magazine ad, for RUSSELL BURDSALL AND WARD BOLT AND NUT COMPANY.  When you Get Maximum Holding Power per Dollar of Initial Cost, That's TFE.  True Fastener Economy!  R B and W Cap Screws for Utmost Security.  Old dated 1948 metal  industry advertisement.  (The scan shows a slight pink tint that is not on the actual ad.)

Approximate size  8 x 11 inches.