Title: Biography of an inventor
Subjects: World War, 1914-1918, Family, Distinguished Service Medal (U.S.), Anesthesiology, Apparatus and instruments, Surgeons, Fathers and sons, Gas masks, History, Technology, Biography, Inventors
Places: United States, Catskill Mountains (N.Y.)
People: Karl Connell Jr, Karl Albert Connell (1878-1941)
Time periods: 20th century