In December 1944 a Stinson cabin plane bound for Salt Lake City crashed in deep snow west of Kinport Peak, killing all three aboard; two men in a search plane over Arbon Valley found the wreck.
In the war years farmers and two chambers of commerce pressed for a better road out of Arbon Valley; in 1944 Idaho's public works chief urged it be a U.S. secondary highway.
Joseph Benson led the Latter-day Saints at the Summit end of Arbon Valley from 1913 to 1924; his wife Louise, her obituary says, kept the ward's records and led its Primary.
In January 1944 Congressman Henry Dworshak named Frank Blair Smith, son of Chester and Arvilla Smith of the valley, Idaho's principal candidate for the Naval Academy.