The 1st National Congress of Tropical Medicine took place in April 1952, as part of the celebrations of the 50th anniversary of the Institute of Tropical Medicine and of the Colonial Hospital, at the Instituto de Medicina Tropical, in Lisbon, Portugal.
Stamps designed by Alberto Souza, and printed by Casa da Moeda, Lisbon.
Angola
Cape Verde
Macau
Mozambique
Portuguese Guinea > Guinea Bissau
Portuguese India > India
São Tomé and Príncipe
Timor > East Timor