Boeing Model 40 and Its Descendants; the Great Mailplane of the TwentiesBy Bluyond / August 7, 2026 Journals / AAHS Journal Vol. 49 No. 2 – Summer 2004 / Boeing Model 40 and Its Descendants; the Great Mailplane of the Twenties Boeing Model 40 and Its Descendants; the Great Mailplane of the Twenties Walt Bohl — p. 114 📄 Download PDF ← Back to AAHS Journal Vol. 49 No. 2 – Summer 2004
