Need ID on U.S. Military Patch- Possibly WW1

[rocklinpicker]

Hello, I have this felt patch here. I have looked through some of the insignia's of units during WW2 and WW1 but can't find this exact patch, does anyone know which unit it is from, or where I can find more information on it? Thank you for the help!

[rocklinpicker]

BTW, the patch measures roughly 2 1/2" in diameter.

[speedwaydog]

U. S. Army, WWII Era, Seventh Service Command.   There are few variations of this particular SSI, yours being the original version.  

More information here:  http://www.history.army.mil/books/wwii/ASF/chapter21.htm

[rocklinpicker]

Thank you for your time, I appreciate it!