Institute of Social and Religious Research. South America - Northern Section. Map. New York: Institute of Social and Religious Research, 1923. Accessed December 24, 2022. https://www.davidrumsey.com/luna/servlet/detail/RUMSEY~8~1~268508~90042718:Plate-22--South-America---Northern-?sort=pub_list_no_initialsort%2Cpub_date%2Cpub_list_no%2Cseries_no&qvq=w4s:/where%2FVEN,q:VEN,sort:pub_list_no_initialsort%2Cpub_date%2Cpub_list_no%2Cseries_no,lc:RUMSEY~8~1&mi=162&trs=267#.

Institute of Social and Religious Research. South America - Northern Section. Map. New York: Institute of Social and Religious Research, 1923. Accessed December 24, 2022. https://www.davidrumsey.com/luna/servlet/detail/RUMSEY~8~1~268508~90042718:Plate-22--South-America---Northern-?sort=pub_list_no_initialsort%2Cpub_date%2Cpub_list_no%2Cseries_no&qvq=w4s:/where%2FVEN,q:VEN,sort:pub_list_no_initialsort%2Cpub_date%2Cpub_list_no%2Cseries_no,lc:RUMSEY~8~1&mi=162&trs=267#.