Grinnell College Bicycle Club, 1891.

The college’s bicycle club poses in front of Chicago Hall, with Goodnow on the left (you can just make out the original observatory, in the top left, that used to sit atop Goodnow’s Tower, housing the college’s telescope).  Bicycling was all the rage in the 1890s, and was actually incorporated into collegiate track & field competitions for about 30 years.