Budding journalists, interviewing one another

Is it "one another" or "each other"? English teachers, care to weigh in here?

Anyway, the boys put their iPads to good use today. They filmed interviews of one another. This year, we will encourage them to film interviews and oral histories with people we know and some we don't.

In other news, we leave in 3 days!

Enjoy and PLEASE comment to encourage the boys.