Just downloaded Masters of Mayhem by James Stejskal, Casement Publishers, digital edition ISBN 978-1-61200-452-5. The book describes the actions of Lawrence of Arabia and the British Mission to Hejaz during WW1, with particular detail of Rolls Royce armored car and tender operations, and some discussion of RFA Talbots an 10 pdr mountain guns. The photos and descriptions of the vehicles are some of the best I've found over the years. Though I've just started reading the text, a casual scan suggests must reading for devotees of this conflict.