Horten brothers biographer David Myhra continues his efforts for a full accounting of the events surrounding the design, construction, and flight testing of the twin turbojet powered all-wing prototype Horten Ho 9 fighter/interceptor and its serial production prototype the Horten Ho 229V3.[AuthorName]By David Myhra[/AuthorName][AuthorBio][/AuthorBio][NumIllustration]over 250 b/w photos, and line drawings[/NumIllustration][CoAuthor][/CoAuthor][SubTitle]Vol 1: Retrospective[/SubTitle][ColorPattern]over 250 b/w photos, and line drawings[/ColorPattern]