From the "History of the Ninth and Tenth Regiments Rhode Island Volunteers" (1892), by William A. Spicer:
"we beheld a small field howitzer, about two feet long, such as is used in the field by infantry. It was rifled, and carried a ball, weighing a pound, about a mile. But such as it was, it was mounted on its carriage and trailed back to camp by Company B, who thus earned the honor of capturing the only rebel cannon taken by the Tenth Regiment Rhode Island Volunteers. It was receipted for by Captain Dyer, and in due time safely arrived in Providence. After many years, through the courtesy of his son, Adjt.-Gen. Elisha Dyer, it has been placed in the museum of the Rhode Island Historical Society."
With luck this little trophy still exists at the museum and could be studied and identified!