United Kingdom. An Air Board Technical Notes Manual Province of China NEW YORK" with the company's

NEW YORK" with the company's insignia and marked "STERLING" on the reverse

maker makred “RM” at the base (Professor R

scattered surface spotting on the obverse

centrepiece insignia illustrating a tree and surrounded by the inscription "HONOR Y SERVICIO A DIOS Y A ESPANA" (Honour and Service to God and Spain)

1913-1924 issue

United Kingdom. An Air Board Technical Notes Manual Province of China NEW YORK" with the company'sAn Air Board Technical Notes Manual with Rigging Notes for various aircraft (Bristol Fighter, De Havilland, etc.), first page named to Everill B. Horton, 22 Old River Road, Barrington, R. I., spine bound in black tape, fraying to edges and generally worn, near very fine.