The very first Penton Spare Parts Manual is # 001 and it covers the very early Steel Tank Pentons. I had some copies made of this manual, as originals are becoming collector items and can be $$$.
$ 20.00 will get you one, including shipping in the continental US.
[email protected] Thank you.
P.S. Be sure to look just inside the cover of your manual when it arrives as possibly a little freebie will be hiding there for you !