The Walter and Elizabeth (Bosch) Miltenberger Collection consists of photographs, correspondence, and biographical material related to the Bosch and Miltenberger families. The collection dates from the 1870s to 2007. The collection has been organized into three series: Photograph, Family History, and Correspondence.

The Photograph Series contains forty-five photographs of members of the Bosch, Miltenberger, Koenig, Jaeger, Keller, Mattern, Voeller, Heintz, Zacher, Mears, Marquart, Schafer, Weisbeck, Shall, Schaan/Schoon, McLean, and Lauinger families. The photographs are from the Simon Bosch photo album and date from the 1870s to 2007. Most of the photographs are original but a few are copies or reprints, and they are mainly family portraits. More descriptive information about each photograph is available below and on DSpace (link to the photographs is available above).

The Family History Series is comprised of a marriage license, a wedding anniversary announcement, family trees, mourning cards, and obituaries. The mourning cards are for Egidi Koenig, Simon Bosch Sr., Martin Bosch, and Lucille Amelia Lenhart. The wedding anniversary announcement is for the 50th wedding anniversary of Mr. and Mrs. Joseph L. Hoffert. The party was held on February 12, 1962 at Our Lady of Mt. Carmel Church in Balta, North Dakota. The family trees, marriage license, and obituary pertain to Simon Bosch.

The Correspondence Series contains five incoming letters to Walter and/or Elizabeth (Bosch) Miltenberger. Most of the letters are from Adam Miltenberger, Julius Miltenberger, and Leo Bosch while deployed during World War II in the 1940s. These letters are copied from microfilm. During the war Leo Bosch was stationed in England and Adam Miltenberger was stationed in Guadalcanal. The other letter is from Mary Jane Frei and concerns Hoffart genealogy, dated July 29, 2003.