Ambulance 464 (the author was driving an ambulance during world war I in Verdun and the Argonne
https://archive.org/details/55311000R.nlm.nih.gov/mode/2up
Published 1918
The wikipedia article on the author is interesting:-
Author Julien H. Bryan (1899-1974) - and so, still in copyright in Life+70 countries
https://en.wikipedia.org/wiki/Julien_Bryan
Introduction by Lyman Abbott (1835-1922)
https://en.wikipedia.org/wiki/Lyman_Abbott
Peter