D-5850. No date, but copy 1 is stamped Sep 28, 1945 and is issue no. 52. Copy 2 has "Editors' copy" handwritten on title page. This manual supersedes BAC preliminary manual no. 8485 as referenced in MANACT.B65.XF8B-1.1.
Photograph of William E. Boeing (right) and an unidentified man in front of steam engine during a logging operation, likely in Washington, circa 1903-1915.