John Schlimm, internationally award-winning author of 11 books on cooking/entertaining, history, how-to and fiction, will speak to the graduating class of 2012 at the University of Pittsburgh at Bradford. Schlimm, whose most recent books are “The Tipsy Vegan,” which was featured in The New York Times, and the upcoming “Grilling Vegan Style,” will deliver the keynote address during commencement exercises at 2 p.m. on Sunday, April 29, in the KOA Arena of the Sport and Fitness Center at Pitt-Bradford. Schlimm was a hit with the students he spoke to during the Pitt-Bradford Alumni Association’s Backpack to Briefcase program in January when he delivered his “There Are No Limits” address. Joshua Gray, a senior broadcast communications major from St. Charles, Ill., was one of the students at the program. “The spirit and drive that John brought to Backpack to Briefcase was amazing,” Gray said. “I have never listened to a speaker and wished he ha...