Antique letter and marketing brochure from the Parker Refining Company in Cleveland, Ohio. The letter details the giveaway of an automobile robe in return for the customer having a drum of Parcoline grease shipped to them to use as a test. The brochure details the Parcoline grease along with a corresponding grease cabinet. I believe these items are from the 1920s based on the other things they were found with.

No rips or tears to letter or brochure noted. The envelope has tears related to opening. See pictures for further details on condition.