You may want to contact the folks on these two web sites. They should be able to assist you.
http://www.civilwarartillery.com/
http://www.cwartillery.org/artillery.html
Respectfully,
Gerald D. Hodge, Jr.
War Between the States Historian
Historian: 39th Georgia Volunteer Infantry Regiment
http://39thgavolinfrgt.homestead.com/39thHomepage.html