Measures approx 6 1/ 2" x 4 1/4" including the card. The actual photo is 4 1/4" x 2 1/2".
The Jerry Blizzard Family, shown here with 13 of their children. They did have a couple more I counted 16 in all, but it was listed in the obituary of Mrs Blizzard 15 surviving children. Maybe one preceded her in death. In this photo are an older couple most likely his or her parents.
According to the 1920 and 1930 census the names are as follows;
Jeremiah Blizzard b1871 d 1929
Lydia Martin Blizzard b1879 d 1947
Children oldest to youngest:
Etta, Belinda, James, Jeremiah,  Enroy, Elen, Myrtle,  Lottie, Preston,  Benjamin,  Joseph,  Edith, Alice, Emma, Luther and Maurice.
The family lived in Carroll County, and in 1920 on Houcksville Rd, by 1930 Lydia now a widow lived  in Westminster on Liberty Street Extended. Based on the number of children in the photo and the census reports, I am guessing this was taken around 1915.