Edwin and Iva Sisson Peterson Wedding Party Portrait. 3 1/8" x 4 3/8" black and white photograph of four people, two young women and two young men; identified as the wedding portrait of Mr. and Mrs. Edwin Peterson; individually, they are Iva Sisson Peterson, left, and Edwin W. Peterson, right; (back row) Lillie Peterson, also known as Peg Peterson; and Monte Sisson, taken October 1914.