Thanks to the tweet below, we came across an amazing photo of Officer Sprinkle and his brother.
Dunno if word ever got to @GhostsofDC or @timkrepp – TWO Sprinkle brothers were MPD officers, J.L. and J.F. http://t.co/u2P7nLtrQZ
— DaveS (@darsal) November 14, 2013
The photo came from the National Law Enforcement Museum’s blog.

Brothers J.L. and J.F. Sprinkle wearing their DC
Metropolitan Police Department uniforms, 1904.
Collection of the National Law Enforcement Museum, 2006.166.1