Posted on May 27, 2021 by Erik Chipchase lonestarbattleship: Boeing Y1B-17 Flying Fortress in flight, she was part of the Second Bomb Group (BB 62). Source
Posted on October 10, 2020 by Erik Chipchase tybarious-deactivated20201031: Boeing Y1B-17 Flying Fortress of the 2nd Bomb Group. Late 1930’s Source