A) 1950, BRAZIL, MAP, RIO DE JANEIRO, PHILATELIC SOCIETY, SIXTH GENERAL CENSUS OF BRAZIL - Castlerockstamps

Maps on Stamps : Brazil A Database of Cartophilately

Atlas of Brazil - Wikimedia Commons

January 2019

Maps on Stamps : Brazil A Database of Cartophilately

Population of Brazil 1950

Central area map of the city of Rio de Janeiro

full sample copy (in .pdf form) - American Philatelic Society

Maps on Stamps : Brazil A Database of Cartophilately

Atlas of Brazil - Wikimedia Commons

1897 Antique map of BRAZIL. Brasil. Rio de Janeiro. Sao Paulo