- The Voyages of the Venetian Brothers: To the Northern Seas in the XIVth Century
- Memoir on a Mappemonde by Leonardo Da Vinci, Being the Earliest Map Hitherto Known Containing the Name of America: Now in the Royal Collection at Windsor
- The True Date of the English Discovery of the American Continent Under John and Sebastian Cabot [microform]
- Notes Upon Russia: Being a Translation of the Earliest Account of That Country, Entitled Rerum Moscoviticarum Commentarii. Translated and Edited, With Notes and Introd. by R.H. Major; Volume 1
- The Discoveries of Prince Henry the Naviagator and Their Results: Being the Narrative of the Discovery by Sea, Within One Century, of More Than Half the World; 2nd edition