While researching SEA CLOCKS: The Story of Longitude, I'm standing on the Prime Meridian (left) and pictured with Jonathan Betts, curator of Horology, National Maritime Museum in Greenwich, England (above center). In New York City, with Robert Andrew Parker, illustrator of SLEDS ON BOSTON COMMON (Fall 2000) (above right). With author friends Johanna Hurwitz (below left) and Trish Marx (below right). Johanna and I write many letters to each other. Trish has written several books about World War II and together, we co-authored TOUCHING THE SKY—the Flying Adventures of Wilbur and Orville Wright.