The school has briefed you on contingencies, and your emergency-contact cards have been filed in triplicate.

NEWYORKER: Playdate

Dispatches were sent in triplicate because the French knew some would be captured and, naturally, the documents were in code.

ECONOMIST: Napoleon and Wellington

If China were building infrastructure projects in triplicate, it might portend that China was overbuilding at a faster pace than Dubai.

FORBES: Nouriel Roubini Is All Wrong About China

That hardly sounds like an underutilized airport with wasted investment in triplicate.

FORBES: Nouriel Roubini Is All Wrong About China

We're still using paper -- we're still filing things in triplicate.

WHITEHOUSE: Presidential Press Conference

Secretaries made copies in triplicate, in case the project was uncovered, even using the typewriters and carbon paper of the Judenrat, the Jewish council set up by the Germans.

BBC: Warsaw Ghetto: The story of its secret archive

In India, where things too often are still done in triplicate, Andhra Pradesh's pioneering e-seva system lets people pay their utility bills, transfer money, buy railway tickets and so on.

ECONOMIST: Technology and the public sector