Blood chits were used by U.S. aviators as a way of communicating with non-English-speaking people. Made of leather, cotton, silk, or rayon, they served as a safe-conduct pass for a downed aviator in need of help from local people. This blood chit is made of printed rayon. Underneath the Chinese flag are Chinese characters in black with a three-inch red seal stamped over them.
The donor was a radio operator assigned to the 1st Combat Cargo Squadron in WWII. He flew on C-47s in the China-Burma-India Theater from 1944 to 1945.