Map of the Straits of Magellan on Wikimedia Commons.
Vargas Ponce, Jose. A Voyage of Discovery to the Strait of Magellan: With an Account of the Manners and Customs of the Inhabitants; and of the Natural Productions of Patagonia (London, [Boston: Printed for R. Phillips; Milford House). This is a translation of the account of the voyage which settled the question of whether ships should attempt passage to the Pacific through the Straits of Magellan. Translated in 1820 from a 1788 edition. Freely Available for downloading in a variety of formats and to a variety of devices from the Open Library.
For more information about this and other excursions, visit Penn Alumni Travel.
William Henry Hudson. Idle Days in Patagonia (New York: E. P. Dutton & Co., 1917). Step back in time to find out what travel to Patagonia entailed 100 years ago. Hudson fulfills a lifelong dream to travel to Patagonia. In his travels he pays close attention to bird life. This book is freely available and downloadable to multiple devices via the Internet Archive: https://archive.org/details/idledaysinpatag01hudsgoog
This documentary records the rich variety of wildlife in Patagonia, and in particular the arrival of the whales in July on the coast of Peninsula Valdes where they give birth to their calves and remain until November. Find the Video at Youtube. Video includes advertisements.