Military Censorship of Mail in Costa Rica 1948 - 1955 - RMPL

A look at the military censorship of mail in Costa Rica from 1948 to 1955. Presented by Francisco Perez at the Philately of the Americas Seminars during the Rocky Mountain Stamp Show in Denver, Colorado May 2019.
Francisco discusses the methods used by the Costa Rican military to censor mail during 1948-1955 and the different ways that mail was marked to indicate that it had been censored.