I purchased in Healdsburg, CA the subject undated studio portraits of a girl and boy taken by Piggott & Shaw, Santa Rosa, CA,and Jas. K. Piggott Souvenir Studio, Santa Rosa, CA, respectively.The photo of a girl is identified on the back of the mount:
"Compliments of your Sister Mag.
Magie Simpson Chas Blazer's niece"
The photo of a boy is identified on the back of the mount:
Pa Blazers sister child"
These individuals appear in Public Member Trees posted on ancestry.com.They are listed in the 1880 Census data for Washington Township, Sonoma Co., CA.
Maggie Simpson, born about 1872 in CA, and Hugh Simpson, born about 1877 in CA, were children of James W. Simpson (1845-) and Mary Jane Blazer (1846-1882).