AVIATION: Four technical books from the early to mid-20th Century including; 'Air Publication 129 R.A.F Flying Training Manual - Part 1 Flying Instruction' from 1929; 'Aeroplane Maintenance and Operation Series, Volume 18 - Aeroplane Carburettors (Part II)', 'Aircraft Power Plants' by Arthur P. Frass; and Aeronautical Engineering' Edited by R. A. Beaumont.
Aviation