The Contrary Farmer, Gene Logsdon has a nice piece on hoes on his blog over at organictobe.org. The piece is from 1985, but I guarantee you that even more than 20 years ago Gene had spent more time at the business end of hoes than any 10 of us combined.
I had the pleasure of working with Gene back in the day. He’s been a prolific writer of books and articles over the years. I think many of you will enjoy his writings, and these posts are a good place to start.