This document is a list of 27 references related to Space Invaders street art in Cologne, Germany, compiled in April 2016. The references include Flickr photo albums, Pinterest boards, and websites documenting Space Invader mosaics found around the city.

1. Compiled in April 2016

4. KLN_01

5. KLN_02

6. KLN_03

7. KLN_04

8. KLN_05

9. KLN_06

10. KLN_07

11. KLN_08

12. KLN_09

13. KLN_10

14. KLN_11

15. KLN_12

16. KLN_13

17. KLN_14

18. KLN_15

19. KLN_16

20. KLN_17

21. KLN_18

22. KLN_19

23. KLN_20

24. KLN_21

25. KLN_22

26. KLN_23

27. KLN_24

28. KLN_25

29. KLN_26

30. KLN_27

31. References
https://www.flickr.com/photos/stencil_h/sets/72157627144882020/
https://www.flickr.com/photos/sandrosamigos/albums/72157604306173431
http://flickrhivemind.net/Tags/cologne,invader
https://www.pinterest.com/ainvader/space-invaders-cologne-allemagne/
http://www.rettungsschwimmen.de/...
…Space_Invaders/Geocaching_files/12956809-Invadersendversion.pdf
http://www.bilderbuch-koeln.de/Fotos/
neustadt_s%C3%BCd_space_invader_in_mosaikbilder_mosaik_kunst_
ausserirdische_au%C3%9Ferirdische_263405