"Mary, Perlanna, Betty Jean, & Louise"
(taken about 1938-40?)
"Louise" is identified in the album as "Nelda Terril little girl". I think the girls are (L to R): Mary Onken (da. of Orville & Virgil Oken), Perlanna Biggs (da. of Perle & Evaun Biggs), Betty Jean Rugh (da of Emil & Zelma Rugh), and Louise Gingerich (da. of Arthur & Nelda Gingerich).