From Northwestern, Spring 2006, "A Puzzling Career", this profile of Robert Leighton:www.northwestern.edu/magazine/spring2006/alumninews/wherearetheynow/banderooge.html 

From the blog,  david-wasting-paper, December 9, 2009, "Cartoonist Survey #15 : Nick Downes", this brief interview ( prepare yourself for the music that plays as the site opens): david-wasting-paper.blogspot.com/2009/12/cartoonist-survey-15.html