In my 1935 Chevrolet repair manual, on page 96 under "how to remove front wheels" it tells you to remove the cotter pin that locks the spindle nut in place. Maybe one of out members has the same year and can tell you the orientation of the hole. Sometimes using a strong cleaner or rust remover can create enough contrast to see the whole. If you had a magnet and some iron filings you might be able to find the hole using the same technique that is used on heads.
