By the redoubtable Elbert Hubbard, who was a friend of Dr. Gregg. This was evidently Mr. Hubbard's last writing before he perished when the Lusitania was sunk.
This little booklet is the source of the quote found on the inside front jacket of the Cowan biography:
And all honor to the man who has taught more people to earn a living than any other one man in America—John Robert Gregg!
Labels: general, history, johnrobertgregg