It's initials, D.R. not Dr.That is a cool find! I would love to read it and see how accurate D. R. Wakefield was in his day. I noticed the first letters give an impression of a Doctor. Anyone Stone would think he has a doctrine in horticulture or something just by the name. Interesting.
I think it was published in 1986. I used it to learn to grow when I was in High school.That's an awesome find mate. What year was it published?