The references are mentioned on the respective pages. The following applies where this was not possible:
Cover photo: Engine, exhibited at HTM Peenemünde GmbH, © T. Blankenstein (permission to use the photo granted by HTM Peenemünde GmbH, represented by Managing Director M. Gericke on March 18, 2010)
All photos from the private collection of the Thiel family: © K. Thiel, Düsseldorf
photos displayed on this website are owned by the website owner. Their use
requires the prior written consent of the website owner. In case of
infringement the website owner will take immediate legal action.
Translation from German into Englisch: Aramis Lee Ebden, Düsseldorf: www.sofortenglisch.de