Which was founded first, Providence Hospital or Walter Reed Army Medical Center?
Providence Hospital (Washington, D.C.):  Founded in 1861, it is the longest continuously operating hospital in the District. Walter Reed Army Medical Center: The Walter Reed Army Medical Center (WRAMC) — known as Walter Reed General Hospital (WRGH) until 1951 — was the U.S. Army's flagship medical center from 1909 to 2011.
i don't know