AdViews is the newest of Duke University's digitized advertising archives (see previously). Unlike the earlier sites, devoted to print advertising, AdViews is all about American TV commercials--several thousand of them, to be exact, from the agency Benton & Bowles (later D'Arcy Masius Benton & Bowles). Viewing the commercials requires ITunes. [more inside]
The London Underground is home to some of the most interesting, weird and fun adverts, which have been tailored to the fact that they have huge posters that passengers are often looking at for minutes at a time while waiting. In Copywriting goes Underground, they challenged ad agencies to write an ad which had at least 50 words in it. Some are crap, but some are pretty innovative - check them out.
Follow the Sun: Australian Travel Posters 1930s - 1960s.
Graphic Design from the 1920s and 1930s in Travel Ephemera. Amazing collection of posters, road maps, steamship and airline timetables, (more timetables here), post cards, luggage labels (more labels here and here), brochures and more. Seeing this stuff makes me wish I had been born seventy-five years earlier (and with an obscene amount of money.) (Warning: the site is seriously painful to look at, but the content's good. Link via Coudal.)