Noted: Mr. Cronon, a history professor at the University of Wisconsin at Madison, was recently the subject of an unusual public-records request by a political group. The Republican Party of Wisconsin asked the university to turn over a batch of e-mail messages by the professor containing certain keywords, as The Chronicle reported, after he wrote a blog post examining how conservative groups had helped craft controversial legislation, including the 2011 measure to strip Wisconsin public employees of collective-bargaining rights.