These pictures came from Steve Ryan’s book, Classic Concentration: The Game, the Show, the Puzzles. While this is an unofficial site not connected with NBC, I welcome contributions.
These pictures are from Jefferson Graham’s book, Come on Down!!! The TV Game Show Book:
Jack Narz gets a special rebus greeting — thanks to Mike Dudas for this image!
Here are Daniel Dennis’ re-creations of Concentration rebus boards from the 1950s and 1960s.
The title and set from the European version of Classic Concentration — these images are from Brandon Wood.
John Di Donato sent me this photograph of Bob Clayton at his Concentration desk.
Here are some Classic Concentration images I would like to have: