Sep 30 1921
From The Space Library
During forest fire season, 47 Air Service aircraft discovered 832 forest fires in 396 patrols from Pacific coast bases, flying 148,113 miles over national parks.
Pointing out the virtual U.S. monopoly of known sources of helium, the NACA passed a special resolution addressed to the President and the Secretaries of War and Navy urging the continuance of the U.S. airship development program.