Show UAL to Recall Early Flight FlightS S Twentieth anniversary of the I first through day and night airmail airmail airmail air air- mail flight between coasts will willbe willbe willbe be observed d Saturday and Sunday Sunday Sunday Sun Sun- day along the transcontinental route of United Air Lines including including ing Salt Lake City The first such flight was made February 22 and 23 1921 with pilots using the famed old open co cockpit DeHaviland biplane The anniversary flights Saturday and Sunday will be made by modern passenger 21 Mainliner Mainliner Mainliner Main- Main liner transport planes As a feature Jack Knight veteran veteran vet yet eran U UAL A L pilot pHot who made the night portion of the 1921 flight will leave San Francisco Saturday Saturday Saturday Satur Satur- day night and n fly to New York City stopping at airports en route to pick up special letters from postmasters |