My first genealogical publication was "Die Van den(r) Berg's van die Kaap tot Witkraal, Petrusburg" 2005, which I compiled for a longtime friend Cas van der Berg; then my own family register, written for my father Skerf Pottas' 80th birthday: "The Pottas shards from Schwalenberg to Windhoek" appeared in 2006.
Families I am still working on: VAN DEN(R) BERG(H), KLOPPER, POTTAS, MENTZ, parts of BEKKER, SMIT, POTGIETER, OOSTHUIZEN, DANNHAUSER, all the descendants of Elizabeth VOOGD, the daughter of Claus VOIGT (a German ) and Christina, a Khoisan woman. Then there is also the Free State progenitor project, i.e. all the men and women who entered the Free State in the period 1820 to 31 May 1902 and who settled there.