We are in the final stages of a frame up restoration on our 1918 Holt 75 (Sn: 3379) and our Autopatrol 7, Sn: 6D1. (Yup, #1) Holt 75: We're looking for the frame rail lettering, Radiator cover (Vertical serial number), fuel tank lettering. Any leads will help.
Also looking for the frame rail "Autopatrol" lettering for our Autopatrol 7 grader.
Attached are some examples of Holt lettering in attachments I found on the web.