For years I commuted to downtown Chicago's Loop, riding the "L" train through the west side of the city. Now I ride only occasionally and at off peak hours, which gives me a chance to sketch some of the riders unobserved. With an endless supply of faces and poses to serve as inspiration, it's fun to experiment with a different styles. Here I've composited a few of these sketches digitally with some of the amazing photos my wife, Lynn, has taken during her commute.

And I couldn't resist posting a few more of Lynn's pictures on their own:

I hope to continue this series from time to time, so Green Line riders be forewarned!