Photos from this exercise came from Flickr, under Creative Commons licence. Thank you to the following individuals for making such beautiful work available.
- Taddie88
- Sebastian Krieger
- Etienne
- Eric Prunier
- Guido D´Elia Otero
- Vlad Fiscutean
- Thomas Hawk
- Domi
- Thomas Hawk
- txmx 2
- Thomas Hawk
- go elsewhere
- go elsewhere
- Thomas Hawk
- Mr J. Shaft
- Arq, Laura D
- David Strom
- Karl C. Swarzer
- Arq. Laura D