Reginald Fessenden
Reginald Aubrey Fessenden (October 6, 1866 – July 22, 1932) was a Canadian-born inventor, who did a majority of his work in the United States and also claimed U.S. citizenship through his American-born father. During his life he received hundreds of patents in various fields, most notably ones related to radio and sonar.
Sven Hedin
After the third senate of the highest German military court (Reichskriegsgericht) in Berlin condemned to death for alleged espionage the ten Norwegians Sigurd Jakobsen, Gunnar Hellesen, Helge Børseth, Siegmund Brommeland, Peter Andree Hjelmervik, Siegmund Rasmussen, Gunnar Carlsen, Knud Gjerstad, Christian Oftedahl and Frithiof Lund on 24 February 1941, Hedin successfully appealed via Colonel General Nikolaus von Falkenhorst to Adolf Hitler for their reprieve. Their death penalty was converted on 17 June 1941 by Adolf Hitler to ten years forced labor. The Norwegians Carl W. Mueller, Knud Naerum, Peder Fagerland, Ottar Ryan, Tor Gerrard Rydland, Hans Bernhard Risanger and Arne Sørvag who had been condemned to forced labor under the same charge received reduced sentences at Hedin's request. Unfortunately, Hans Bernhard Risanger died in prison just a few days before his release.