1. Aircraft accidents. Investigation of dirigible disasters, hearings, 73d Congress, 1st session, pursuant to H.Con.Res. 15, creating joint committee to investigate causes of wrecks of dirigibles, May 22-June 6, 1933. Bookmark Corporate/Agency Authors: Dirigible Disasters, Joint Committee to Investigate Publisher: Dirigible Disasters, Joint Committee to Investigate Date: 1933 SuDoc number: Y 4.D 62:H 35