Frank and Chet Derry during parachute test

Description

Chet Derry (left) helps Frank Derry (right) put on a jump jacket (please correct). The men are standing near an airplane parked on a gravel runway in Winthrop, Washington. The photograph is part of a scrapbook owned by Larry Lufkin, whose father, Francis, was involved in the 1939 parachute experiments.