James S. McDonnell Foundation

**From Global Scientific Research to Local Economic Prosperity** At the James S. McDonnell Foundation, we believe that prosperity must be built — and shared — through strategic, long-term investment in people and ideas. Our mission is to improve economic mobility for St. Louisans facing the starkest disparities by supporting organizations and initiatives that create pathways to opportunity. We take an evidence-based approach, investing in solutions with the potential for measurable impact. We support bold, innovative ideas that remove barriers to progress. We strive for humility and true partnership, recognizing that lasting change happens when we listen first and work alongside those closest to the challenges. These values trace back to our namesake, James S. McDonnell (“Mr. Mac”), who built his company in St. Louis with a belief in rigorous research, a pioneering spirit, and a commitment to people. Today, JSMF applies that same mindset to our philanthropic work — advancing prosperity that works for St. Louis. Our Founder **James S. McDonnell Jr. (1899-1980): Aviation and Aerospace Pioneer** James Smith McDonnell Jr., affectionately known as “Mr. Mac,” was a pioneering aerospace industrialist whose vision shaped twentieth-century aviation and space exploration. Born on April 9, 1899, in Denver, Colorado, and raised in central Arkansas, McDonnell developed an early passion for engineering and innovation. After graduating from Princeton University with honors in physics and earning a master’s degree in aeronautical engineering from MIT, McDonnell served briefly as an aviation cadet. In 1923, he famously tested early parachute designs. He described his parachute jump as “such quiet and mental isolation as never experienced on Earth — ecstasy.” In 1939, McDonnell founded McDonnell Aircraft Corporation in St. Louis, strategically located in the American Midwest as war loomed. During World War II, the company produced airplane parts to support the war effort. After the war, McDonnell Aircraft became an innovator for the United States Armed Forces, notably developing the Navy’s first carrier-based jet fighter. Under McDonnell’s leadership, the company also secured groundbreaking contracts in space exploration, becoming NASA’s contractor for the Mercury and Gemini spacecraft, marking America’s first steps into human spaceflight. A cherished keepsake from this era was astronaut John Glenn’s autograph describing himself as “a very satisfied customer.” McDonnell Aircraft expanded into commercial aviation by merging with Douglas Aircraft in 1967, forming McDonnell Douglas Corporation and significantly contributing to the age of mass air travel with aircraft such as the DC-10. Known for his ethical and collaborative leadership style, “Mr. Mac” introduced the innovative practice of calling employees “teammates” and advocated strongly for global peace, making McDonnell Aircraft the first U.S. company to recognize United Nations Day as a paid holiday. His commitment to global responsibility extended to philanthropy with the establishment of the James S. McDonnell Foundation in 1950, which became a major supporter of scientific research. James S. McDonnell Jr. passed away on August 22, 1980, leaving an enduring legacy of innovation, leadership, and commitment to humanity’s advancement.