David Wallechinsky & Irving Wallace. 1981. History of the Search for Percy H. Fawcett Part 2. Trivia-Library.com. [2]Αρχειοθετήθηκε 2008-07-24 στο Wayback Machine.
«Apazauca spider». The Great Web of Percy Harrison Fawcett. Αρχειοθετήθηκε από το πρωτότυπο στις 24 Οκτωβρίου 2020. Ανακτήθηκε στις 30 Ιουλίου 2016.
David Wallechinsky & Irving Wallace. 1981. History of the Search for Percy H. Fawcett Part 2. Trivia-Library.com. [2]Αρχειοθετήθηκε 2008-07-24 στο Wayback Machine.
Neither George Lucas nor Steven Spielberg—co-creators of the successful concept and franchise—have indicated that any specific individual inspired their character, other than the generic stock heroes popularised in the matinée serials and pulp magazines of the 1930s and 1940s they admired and wished to modernise, or later exotic-culture adventure films such as 1954's Secret of the Incas.