Concentration Images
Features show commentary and host images of Bob Clayton and Hugh Downs.
I Remember Concentration Game
Allows users to download a copy of "I Remember Concentration", a PC game that recalls the game show of the sixties and seventies.
IMDb: Concentration
Information about game show that used two contestants who tried to solve the puzzle first. Show ran from 1958 to 1979 using various hosts.
James Vipond: Concentration
Historical information the game show, includes the rules, the hosts, the models, Bob Clayton, and a photo gallery.