I just tumbled into a fantastic vat of info hosted by the Special Collections Research Center of the NCSU Libraries.
”Radial, tangential, and cross-sections of 350 North American woods from the 14-volume rare book The American Woods, published between 1888 and 1910 by the author, Romeyn Beck Hough. The images can be accessed by volume number or by the scientific or common name of each tree.”
The 600DPI images are nice and big for positive IDs, or maybe for getting interested in trying out certain species. I’m going to be dizzy after hours of clicking on each of these.
-- Gary, Los Angeles, video game animator