Ruth Deitz and her son Isaac Deitz 5 1/2 whose checking out the clocks on the back of Snoopy begin there second day of hunting for Snoopys at the Minnesota History Center. "Rockin round the clock." was designed by Artist Terry Scheller and Tom Amble and sponsored by the Minnesota Historical Society. Isaac and his mom, Ruth Deitz, spent more than 15 minutes studying the watches and clocks ,some which are interactive. His mom said the two had seen about 20 Snoopys so far. "We're out on a Snoopy hunt today. This is our first one today. We have to do them in batches, Deitz said of her venture with her son. So far Isaac's other favorite Snoopy is Patchwork Snoopy.