This week on A Prairie Home Companion, it's a back-to-school bumper crop featuring bits and pieces from the Universities of Michigan, South Dakota, Minnesota and Purdue. Jerry Douglas plays the "Emphysema Two Step," The Purdue Glee Club sings from the LaFayette phone book, Becky Schlegel sings Greg Brown's song "Early," and Robert Sonkowsky ”Latin professor from the University of Minnesota”recites a bit of Horace. Plus, Bella Hristova plays Kreisler, and in the Lives of the Cowboys, Lefty sits in on a class at Winona State. It's the last of the summer compilation programs before the 2011-2012 Season Opener next week, live from The Fitzgerald Theater.