BBC Test Card Club: Rare photos of BBC Trade Test Transmissions and Identification Symbols from Keith Hamer's Collection. Includes pages on DX-TV.
Bergstam, Thomas: Provides photographs of test cards from television.
Test Card Circle: Learn about the history of British "Testcard" music played during television closedown periods.
Testcard View: Dutch DX-er's site, with famous testcards received by atmospherics in the Netherlands.