"Lode and Placer Gold Deposits of New Mexico" is actually a compilation of three rare and long out of print publications. USGS Bulletin 1348 Placer Gold Deposits of New Mexico by Maureen G. Johnson published in 1968; US Bureau of Mines Information Circular 6987 Gold Mining in New Mexico by O.H. Metzger published in 1938; NM Bureau of Mines Circular Number 5 Gold Mining and Gold Deposits in New Mexico by E.H. Wells and T.P. Wootton published in 1932 and revised In 1957.