Thanks for the response. I had found that picture with the wooden cap (?), but didn't pay it much attention, as my bottle doesn't have that roughened surface. "Puritan life" very droll.
I've just begun doing research on 3 little bottles which I dug out of an old farm trash site about 35 years ago, and I need help. The only bottle which seems possibly to be collectible is a 4-ounce Old Quaker bottle. It does not bear the "Federal Law Prohibits...", so it's pre-1935. Prowling...