The Contains Lead signs said a lot more than the shorter version you see , 1940 and newer . My research has them in use as far back as 1925 when Tetra Ethyl was re introduced . Such signage was placed on the FRONT of the pump . Yes, Lead was used before this time and Ethylizers were in use by attendants that were mounted on the side of the pump . Of course this stopped as a result of attendants dying on the job as Tetraethyl absorbed via the skin will kill you .
I'll yield my comments to Wayne here as he beat me out . Wayne , GREAT answer .
Last edited by eshaver; Sun Mar 15 2015 07:25 PM.