The exhibit starts with the earliest known letters to and from Puerto Rico (1778 and 1789) and ends with the postal turmoil during and immediately after the Spanish-American war in 1898. In-between, it provides a comprehensive display of early Puerto Rico postal history with numerous important rarities. The exhibit is shown as a pdf file.
Stefan Heijtz has kindly agreed to make his exhibits available on NETEX. They can also be seen on his own website.