Six Peterson Siblings as Adults. 6 3/8" x 4 3/8" black and white photograph of six adults posed together outdoors at a picnic at Clear Lake Park, Waseca, Minn.; identified L-R: (front row) LaVonne Peterson Schroeder, Iva Sisson Peterson, and Mildred Peterson Spaulding or Spalding; (back row) Keith Peterson, Marlin Peterson, and Clair Peterson; these are the grown children of Iva Sisson Peterson; see Accession LU23.29 for same family at an earlier time.