German Geologists Study Mt. Signal to Solve Mystery » Holtville Tribune

German Geologists Study Mt. Signal to Solve Mystery » Holtville Tribune

USGS: Geological Survey Bulletin 707 (Itinerary)

German Geologists Study Mt. Signal to Solve Mystery - Calexico Chronicle

Researchers go in the trenches at recently uncovered archaeological site at Hollomon Air Force Base

Historyofimperia 00 Farr, PDF, Colorado River

1973-1974 Peru Pedagogian - issues 1-23 by Peru State College Library - Issuu

EJM - Metamorphic P–T paths of Archean granulite facies metasedimentary lithologies from the eastern Beartooth Mountains of the northern Wyoming Province, Montana, USA: constraints from quartz-in-garnet (QuiG) Raman elastic barometry

FEBRUARY, 1951 35 CENTS - Desert Magazine of the Southwest

Researchers go in the trenches at recently uncovered archaeological site at Hollomon Air Force Base

documentary photography – Page 8 – Art Blart _ art and cultural memory archive