- [S1] US-state, "Social Security Card" (SS card, San Francisco, 24/09/1937) (Baltimore: Darrell Blevins, may 1999). Hereinafter cited as "SSN#001."
- [S2] Unknown author, Geb.urkunde (n.p.: n.pub., unknown publish date).
- [S4] Unknown author, bestätigt vom Autor (n.p.: n.pub., unknown publish date).
- [S5] Demont Yvonne entry, Doodsbrief Demont Yvonne, Chris Johan Kefel, Wijnegem, Antwerpen, BE.
- [S6] Coenraets Jos entry, Doodsbrief Coenraets Jos, Chris Johan Kefel, Wijnegem, Antwerpen, BE.
- [S8] Vueghs joannes maria entry, Doodsbrief vueghs joannes maria, Chris Johan Kefel, Wijnegem, Antwerpen, BE.