Interconnected

The Ident Zone (tele corporate branding over the decades) and the Test Card Gallery both have large galleries of television imagery. Particularly good are: BBC Test Cards (see also the rationale behind Test Card F); Children's BBC branding (which alarmingly means I have no memory before the age of 9. What happened to me?); and old BBC branding (which is all the more impressive because the graphics are actually mechanically made).