”CALIFORNIA STATE NORMAL SCHOOL
Standard On. Company.,
200 Bush St., San Francisco. Gentlemen:
I have just received your excellent poster-circular concerning Zerolene lubricants and their value to Studebaker cars.
While I am pleased to hear of wide actual experience and expert testimony confirming the truth of your claims as to the excellence of this lubricant, let me assure you I needed no evidence whatever upon that subject.
For nearly four years I have used Zerolene lubricants exclusively. I have had the valves cleaned twice during that time and have never had the engine opened. Its bearings and the bearings of the car run as smoothly and quietly today as they did when I bought it.
Yours very truly,
(Signed) Allison Ware”