The Old '76 House in Tappan is inseparably associated with Major John André and Benedict Arnold's failed betrayal of West Point. André, adjutant general of the British army in North America, met secretly with Arnold in September 1780 to receive plans and intelligence about the Hudson River fortress. Captured near Tarrytown while traveling in civilian clothes and carrying incriminating papers, he was brought within American lines and confined at this tavern.

Washington convened a board of general officers in nearby Tappan to examine the case. The board determined that André had entered American lines under a false name, changed his dress, and carried military information, making him a spy under the accepted laws of war. Although admired for his composure and personal qualities, he was sentenced to death. On October 2, 1780, André was hanged nearby. Arnold escaped to British-held New York and served the Crown, while West Point remained in American hands. The tavern survives as a setting in a crisis involving intelligence, loyalty, military law, and the vulnerability of the Continental cause.

Historic markers necessarily compress complicated events into a small space. The surviving landscape should be read alongside contemporary letters, military records, maps, court documents, and later archaeological work. Comparing these forms of evidence can reveal both the immediate event and the slower changes that shaped how it was remembered. That careful comparison also prevents a concise inscription from becoming the entire history of a complex place. Roads may have shifted, buildings may have been replaced, and a marker may stand at a safe viewing point rather than the exact eighteenth-century location. Responsible interpretation separates documented fact from plausible context and from traditions that appeared generations later.

The site also belongs to a larger human network. Armies depended on laborers, farmers, wagoners, craftspeople, sailors, women maintaining households, and civilians compelled to provide food or transport. Enslaved people produced wealth and supplies while pursuing freedom within a conflict that proclaimed liberty. Native nations followed their own diplomatic and military strategies. War reached communities through inflation, requisition, illness, divided loyalties, damaged property, and circulating news as well as combat.

Visiting the place makes those connections easier to see. Terrain influenced travel and defense; waterways linked local events to distant campaigns; civic buildings turned legislation into enforceable policy; homes and taverns supported communication. The marker is therefore both a guide to an event and evidence of later remembrance. Its best use is as a starting point for understanding how one locality participated in the wider revolutionary struggle and how succeeding generations chose to preserve that participation.