Three antique softcover books:

Bulletin 413 (1910), "A Reconnaissance of the Gypsum Deposits of California with a Note on Errors In the Chemical Analysis of Gypsum", Plates are secure in book.  

Bulletin 581-D (1914), "Geology and Oil Prospects in Valthan, Priest, Bitterwater, and Peachtree Valleys, California, with notes on Coal."  Plate securely attached.  

Bulletin 691-H (1918), Geology and Oil Prospects of the Salinas Valley Parkfield Area California, Plate is loose, but included.  

All three books are very worn; pages are secured together, but detaching from covers with markings and wear throughout.  Please refer to (17) photos for additional detail; questions are gladly answered. 

** I have additional geology-type books, plates, maps, listed and as always, shipping is FREE which includes tracking. Books will be mailed out one day after payment is received.