Came across a c.1912 photo of a 40hp? White with an ambulance body in the US Navy online archives....Used at the US Naval Hospital, Philadelphia.
[
www.history.navy.mil]
Online Library of Selected Images -- Photo Albums --
(Naval Historical Center Lot # S-581)
J. Beatrice Bowman album, circa 1908-1915
Interesting what you find in digitised collections!