Bertha & Albert Genzen
Twin Gables back left and Firemen's Hall back right - taken in the city park

Back: Virgil, Robert, Ivan, Bertha (Grimm), Lester, Albert
Front: Odessa, LaVonne, Lucille

According to one family genealogist - Albert's given name is Edward Max Albert Genzen
A birth certificate or baptism document would hopefully confirm or refute this...