I would like to thank for missing photographic material to:
- Obety Jose Baptista
- Jerry Barad
- Wiebe Bosma
- Dr. Pavel Hanáček
- Mike Haney
- Dennis de Kock
- late Chris Moore
- Cecilia Gasque Novelo
- Giuseppe Orlando
- late Tim Peatling
- Bert Polling
- Darrel C. H. Plowes
- Dr. Loukie Viljoen
and for valuable location data to:
- Wiebe Bosma
- Ingo Breuer
- Dr. Peter V. Bruyns
- Dr. Pavel Hanáček
- John Lavranos
- Rob Nagel
- Giuseppe Orlando
- Darrel C. H. Plowes
- Ernst Specks
- Jaco Swanepoel