"United States Census, 1900," index and images, FamilySearch (https://familysearch.org/pal:/MM9.1.1/MSMY-S3D : accessed 12 Mar 2014), Henretta Kollterhouse in household of John Kollterhouse, Precinct 2 Grand Rapids city Ward 7, Kent, Michigan, United States; citing sheet 13B, family 279, NARA microfilm publication T623, FHL microfilm 1240722.