I found a YouTube video of Chris Price and Paul Seibert flying around the Brodhead Airport during the 2012 Midwest Antique Airplane Association “Grassroots” fly-in at Brodhead Airport (C37). Select here for video.
Below is a link to a very interesting article published in May 2012 Atlantic Flyer magazine. It brings up to date on a particular airplane.
I took a ride in it in the 1970’s. It was based in Dixon, Illinois.