Amazing to be staying in the heart of Philadelphia’s historic district. I took a little walk to stretch my legs after the plane ride, and wound up visiting Ben Franklin’s home, walking past the oldest post office in the U.S. (supervised by B. Franklin, postmaster), getting a glimpse of Mr. Franklin’s grave, and taking a quick peek at the liberty bell. My goodness! And all so relevant to The Eureka Key, in which my three young heroes have to track down the key that Franklin flew from his kite, or dire consequences will ensue.