- Collection629 - Mennonite Genealogy Inc. Photograph Collection
- SeriesK - MGI - "K"
- Subseries93.0 - David Klassen, 1813 (delegate) & Aganetha Brandt, descendants
- Itema - 1874 Mennonite immigrants on the SS International with David Klassen far right
- Itemb - Peter Klassen 1852 and wife Katharina Koop 1857
- Itemc - David Klassen, and sisters Gertrude, Aganetha, Anna, Helena
- Itemd - Gertrude Klassen with adopted and foster children and grandchildren