Areas of Examination
 
Important areas to examine when comparing theorized Pacific Coast landing locations with the journal* kept by Francis Fletcher during Francis Drake’s circumnavigation are:

Land Claim:

Survey of Neahkahnie Mountain

Appendix I.   NPS Landmark Committee Meeting [Commitment between the Spanish Ministry of Culture and NOAA for a cooperative Program intended to study and preserve Spanish shipwrecks in U.S. waters (such as the San Agustin) and U.S. ships in Spanish waters.]
Early Maps and Comparisons:

Jodocus Hondius World Map

Hondius Broadside Map

Hondius Broadside Comparisons with California

Nicola Van Sype Map

Indian:

Language         Dress          Housing     

     Flora & Fauna          Watertight Baskets

Geography:

Islands of St. James a.k.a. Three Arch Rocks


Here's what the Princeton's Library says.

Neahkahnie Mountain, Oregon

  *  "The World Encompassed by Francis Drake” is the journal of Rev. Francis Fletcher who accompanied Francis Drake on his voyage of circumnavigation 1577-1580.  It would be hard to find a Drake enthusiast, amateur or professional, who would not rate this book the number one reference source of the voyage.   In the 16th and 17th centuries, it was customary for the secular membership to be the chronologer on officially sanctioned excursions.

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List of Writings by Garry Gitzen

A California Drake theorist, Professor Robert Heizer, University of California at Berkeley, one of the leading professional ethnographic authorities, relied heavily on the authenticity of the “plate of brass” in his 1947 thesis to prove the California Miwok and Pomo Indians were the natives Drake came into contact with in 1579.22  In 1974, then believing the plate was a hoax, Heizer states;

“We have to admit we know very little about the particular form of Indian culture… and even the native language spoken there [ Northern California Miwok/Pomo] up to about 1800 A.D. is in some doubt.” 

We will see in Chapter 4 of Francis Drake In Nehalem Bay 1579 that the Indians Drake met were the Nehalem.