Trade
 
Soviet Dissidents and the "Brain Drain"
In the beginning of 1989, Henry Kissinger met with Mikhail Gorbachev for an informal conversation about the future of U.S.-Soviet cooperation, particularly concerning economic opportunities in the Soviet Union. The problem for U.S.-Soviet trade was the Jackson-Vanik Amendment to the 1974 U.S.
 
President Bush Welcomes Vaclav Havel to the White House
In February 1990, the newly-elected president of Czechoslovakia, Vaclav Havel, became the first Czechoslovakian leader to visit Washington and meet with a US president.
 
The Continental System (1806)
Since 1793, the French government had carried out policies intended to ruin British commerce; it hoped in this way to eliminate or at least dampen the British will to join in and its ability to finance military coalitions against the French.
 
The Pennsylvania Gazette: Magnitude of the Insurrection (12 October 1791)
The magnitude of the Haitian insurrection quickly became clear as alarmed observers related that considerable armies were being raised to fight the rebels. It is noteworthy that such reports even to northern U.S. newspapers expressed little sympathy for the rebels.
 
New York Public Library Digital Collections
The NYPL Digital Collection provides access to over 755,000 images digitized from primary sources and printed rarities, including illuminated manuscripts, vintage posters, illustrated books, and printed ephemera. 
The Atlantic Slave Trade and Slave Life in the Americas: A Visual Record
The images document the history of enslavement in West and West Central Africa, the English and French Caribbean, Brazil, and the United States. 
Caribbean Views
The online collection is of extraordinary quality, both in terms of the scanned images and the contextual detail provided. 
Maya Vase Database: An Archive of Rollout Photographs
The vases include scenes of palace life, mythology, warfare, and animals. 
Al-Idrisi's World Map
The Nuzhat al-mushtāq fī ikhtirāq al-āfāq, most commonly known in the West as the Tabula Rogeriana ("The Book of Roger" in Latin), is a manuscript created by the Arab geographer Muhammad al-Idrisi that contains a highly detailed, partial-world map and extensive descriptions of the s
 
Ptolemy's World Map
Claudius Ptolemy lived in the city of Alexandria in Egypt from about 100 to 170 CE. At that time Egypt was a Roman province and Ptolemy may have been a Roman citizen.