Peter Sheridan

An overlooked group of Black women codebreakers working in segregated and harsh conditions at Arlington Hall played a crucial role in uncovering Soviet nuclear activities during the Cold War. Their analysis of seemingly mundane intercepted messages revealed the construction of secret nuclear cities and contributed to major intelligence efforts such as the Venona Project. Despite their significant impact, they were undervalued and restricted by systemic racism, which limited their opportunities and hindered US intelligence gathering. Some later rose to senior positions, but most remained unrecognized until recently, with new research highlighting their contributions to US national security and Cold War history.