9 maio 1899 ano - 4th US Military Governor of Puerto Rico 
George Whitefield Davis
Descrição:
 George Whitefield Davis (July 26, 1839 – July 12, 1918) was an engineer and Major General in the United States Army. He also served as a military Governor of Puerto Rico and as the first military Governor of the Panama Canal Zone.
Military Commandant under US Rule
25 Jul 1898 - 21 Oct 1898 Nelson Appleton Miles 
21 Oct 1898 - 9 Dec 1898 John Ruller Brooke
9 Dec 1898 - 9 May 1899 Guy Vernor Henry 
9 May 1899 - 1 May 1900 George Whitefield Davis
Governors under US Rule
1 May 1900 - 15 Sep 1901 Charles Herbert Allen 
15 Sep 1901 - 4 Jul 1904 William Henry Hunt 
4 Jul 1904 - 18 Apr 1907 Beekman Winthrop 
18 Apr 1907 - 6 Nov 1909 Regis Henry Prost
6 Nov 1909 - 15 Nov 1913 George Radcliffe Colton
15 Nov 1913 - May 1921 Arthur Yager
http://www.elboricua.com/Governors.html
https://en.wikipedia.org/wiki/List_of_governors_of_Puerto_Rico#Post-Foraker_Act_of_1900 
Adicionado na linha do tempo:
Data: