Very nice grouping. Anything 1902 and older is getting hard to find...
Very nice, I'm jealous!!!
J.H. Winwood (on the 1928 Manual)
Job Henry Winwood (1875-1953) was one of the best U.S. Mineral Surveyors in this neck of the woods. He graduated from the Michigan College of Mines with a degree in Mining Engineering in 1903.
I know it is what is inside that counts, but the 1919, 1924, & 1928 covers are really sharp looking.
Have two 1947 manuals in good condition. Be open to horse trading one them for one I don't have.