I purchased the subject photo of a young girl petting a dog.It is identified on the back of the print in period ink:
"MARGARET S. LEONARD AT HOME MIDDLEBORO. MASS."
This individual appears in a public member tree posted on ancestry.com.She is listed in the 1900 and 1910 Census data for Middleboro (resided at 18 High Street), Plymouth Co., MA.
Margaret S. Leonard, born Jul 1890 in MA, was the daughter of a shoe manufacturer, Arthur Holmes Leonard, born 23 Nov 1863 in Middleboro, Plymouth Co., MA, died 20 Dec 1955 in Los Angeles Co., CA, and Lizzie Shaw, born 5 Mar 1864 in Middleboro, Plymouth Co., MA, died 5 Jan 1940 in Los Angeles Co., CA.Margaret had a younger brother, Arthur H. Leonard, born Mar 1892 in MA.