Thanks to:
First a very big thanks to Marcus Engelbert from for all his info from his website for navigation during my trips and also for allowing me to use all his google earth kmz-files on my website.
Raphael Smid
Information and fieldwork and lots of fun during our trips (www.bunkerpictures.nl)
Jan Freekenhorst
Information and fieldwork and lots of fun during our trips (www.festungeuropa.nl)
Danny Hoek
Information and fieldwork and lots of fun during our trips (www.katwijkinoorlog.nl)
Klaas van Brakel †
Lots of information and hospitality during my research for my book.
Alex Werner
Information and fieldwork
Hans Doornheim
Fieldwork
Nathan van Zummeren
Information and fieldwork
Jan Lugtmeijer †
Information and fieldwork
Adrie Doorduin
Fieldwork (www.bunkerboysoostvoorne.nl)
Jack Westhoeve
Information and fieldwork
Mark Witte †
Information, pictures, fieldwork, friendship, hospitality and all his wishdom during my search for info about Overvoorde
Rob Mans
Fieldwork
Maarten Meijer
Information
Sjarel de Kraker
Fieldwork
Tim de Mos
Information and fieldwork
Bas de Mos
Information and fieldwork
as
Jack Korneef
Information and fieldwork
Rudi Rolf
Information
Michael Svejgaard (SES)
Information
Hans Sakkers
Information
Arthur van Beveren
Information and fieldwork (www.bunkersite.com)
Lenco van de Weel
Information (www.bunkersite.com)
Peter de Krom
Information and fieldwork
Marinus Venhuis
Information and fieldwork
Tristan Cools
Information
Rene Dolfsma
Information
Jeroen Rijpsma
Information and fieldwork
Peter Heijkoop
Information and fieldwork
Peter R de Vries
Tour through his bunker
Ruud Pols
Information and fieldwork
Ron Bakker
Information and fieldwork
Leo de Vries
Information
Drs. J.C Brugman
Tour through his bunker (Bilthoven) and information
Eric Zwijnenberg
Wimmenumermolen at Bergen, information and hospitality
Dhr. Zwetsloot
Firebrigade Burgh-Haamstede, bunker 118a
Koen van Doorn
Fieldwork and hospitality (Breskens area).