In the years following the Second World War, the collection increased dramatically, so much so that the Brown family were advised to move the archive out of their house for fear of causing structural damage from the weight.
Today, the collection is located on the top floor of the John Hay Library situated on the Brown University campus.
The graphics depict soldiers in battle, on parade, genre scenes, caricatures, military portraits, and uniform studies.
Every major country is represented, with France, the United Kingdom, Germany and the German states being the largest sections.
Complementing the graphic collection are over 20,000 books, and thousands of albums, sketchbooks, scrapbooks and portfolios.