Applied color label, or ACL, bottles may have been in use as early as 1931, but documented evidence of the labeling and lettering technology can be definitely dated to 1933, when Brock Glass Company of Pennsylvania began producing bottles with fired-pigment labels for pharmacies. Milk bottles with ACL lettering and logos were produced that same year by Thatcher Mfg. Co. of Elmira, New York, which used an English technique called Pyroglazing,...Continue Reading