[Rockhounds] Bibliographies of the Grand Canyon and Lower Colorado River Regions

[Paul]

The below publications have to be seen to understand
the enormous volume of information that they contain.
Also, the page numbers listed below are correct and are
not typographic errors.

Spamer, E.E., 2018. A Worldwide Bibliography of the Grand
Canyon and Lower Colorado River Regions in the United
States and Mexico. 1535–2018. Raven’s Perch Media.
https://ravensperch.org/

Spamer, E.E., 2019. Bibliography of Paleontology of the
Grand Canyon Region. Raven’s Perch Media. 131 pp.
https://ravensperch.org/bibliography-of-paleontology-of-the-grand-canyon-region/

Spamer, E.E., 2021. Cartobibliography of the Grand Canyon
and Lower Colorado River Regions in the United States and
Mexico 1535–2021. The Plains and the Rockies : a critical
bibliography of exploration, adventure and travel in the American
West. Raven’s Perch Media.
https://ravensperch.org/cartobibliography/

Yours,

Paul H.