Sir,
The proper nomenclature for this unit would be the 16th Georgia Volunteer Infantry Regiment. If you do a search for "16th Georgia" in the search portion of this Message Board or Google for instance, you will get numerous returns to look at.
I hope this helps.
Respectfully,
Gerald D. Hodge, Jr.
War Between the States Historian
Historian: 39th Georgia Volunteer Infantry Regiment
http://39thgavolinfrgt.homestead.com/39thHomepage.html