This particular carbine was known as the second variation, which dropped the addition of the patch box in the butt stock. These carbines saw use by cavalry forces on both side of the civil war. Lock is marked "J.H. MERRILL BALTO/PAT. JULY 1858/APL. 9. MAY 21-23-61". Lock is dated "1863". Breech mechanism marked "JH MERRILL BALTO/PATENTED JULY 1858". Breech mechanism is numbered "18154".

"When Myra C. Robinson was born in 1861, in Grand Rapids, Kent, Michigan, United States, her father, Capt. James D. Robinson, was 37 and her mother, Almera C Church, was 37. She married Wilber Andrew Studley on 17 August 1897, in Grand Rapids, Kent, Michigan, United States. They were the parents of at least 2 sons and 1 daughter. She lived in Napa, Napa, California, United States in 1880. She died on 20 January 1950, in Grand Rapids, Kent, Michigan, United States, at the age of 89." Sourced from Familysearch.com