Understanding the Maps Used By Columbus & Magellan. Ophir, Philippines? Solomon's Gold Series 16E

In their own words, we know exactly which maps were used by Columbus and Magellan on their journeys. Not sure how so many scholars and academics are oblivious to this but this is the mindset that found Ophir and Tarshish and they ignore it. It's time to understand it as well as expose those using Ptolemy's maps for Southeast Asian geography when the guy left all of it off and knew nothing of such except a few legends he draws in. However, Magellan corrects him and this should be in every text...