I purchased in Middletown, CA, the subject studio portraits.The earlier undated photo of a young boy is identified on the back of the mount:
"Clyde Pritchett Jennie's boy grandma's older sister"
The later RPPC (Real Photo Postcard) (not postally used) is identified on the back:
"Taken in Spokane after a five week siege of sickness April 19`18 some what shot to pieces but still on the job With Best wishes From Mug
Cousin on Greening side"
These individuals, a father (Albert) and his son (Clyde), appear in Public Member Trees posted on ancestry.com.
Albert Willis Pritchett, born Jan 1863 in Geyserville, Sonoma Co., CA, died Jun 1947 In Shasta, Shasta Co., CA, was a farmer, the son of a stock raiser/farmer, James Harrison Pritchett (1824-1890), and Elizabeth M. "Betsy" Miles (1832-1916). On 28 Dec 1887 in Healdsburg, Sonoma Co., CA, Albert married Jennie Luticia Greening (1869-1916). One of the couple's children was Clyde Greening Pritchett, born 16 Feb 1897 in Healdsburg, Sonoma Co., CA, died 10 Dec 1944 in Sonoma Co., CA. Albert is listed in the 1870, 1880, 1900, and 1910 Census data for Mendocino Township, Sonoma Co., CA; and the 1930 and 1940 Census data for Reno (resided at 600 Mill Street), Washoe Co., NV.Clyde is listed in the 1900 and 1910 Census data for Mendocino Township, Sonoma Co., CA; the 1920 Census data for Vallejo (resided at 839 York Street), Solano Co., CA; and the 1940 Census data for San Francisco (resided at the Delta Hotel, 88 Sixth Street), San Francisco Co., CA. Clyde was employed as a phone operator for a taxi company in 1918 and as a flour mill elevator boy in 1920; his WWI draft registration card shows that he had crippled feet.