In those pics are the Chinese Nationalist Air Force a/c and crews. Judging from the Soviet I 15, French D 510 and Hawkers. Those pictures were probably from late 1930s before the air force was practically wiped out by the Japanese and rebuilt with American lend-lease planes.
WOW, that was cool. But one can't help to wonder if it's really workable, why is there no other military or civlian development over the last 60 years.