- Fonds95 - Peter P. Martens family fonds(Draft)
- Series15 - Photographs
- Subseries1 - Families
- Item2008.027.001 - Helena (Wieler) Martens
- Item2008.027.002 - Franz Peter and Helena (Sukkau) Martens
- Item2011.046.013 - Peter P. Martens family
- Item2011.046.014 - Diamond anniversary
- Item2011.046.015 - Peter P. and Helena (Wieler) Martens and family
- Item2011.046.016 - Abraham F. Martens and Sarah (Penner) Martens anniversary
- Item2011.046.017 - Henry, Susie (Martens) Walde and family
- 15 more...