My favorite radio station ( http://www.klassikradio.de/ ) features a daily "soap" and contest called "The true story". A person or incident of historical significance is described and you can call and win a book in case you know (and are the fastest caller). The last episode in a nutshell asked whom President Abraham Lincoln considered "our best recruiting sergeant". Of course, for the less specialized audience there was some more info, but do you need more to figure?