I counted the chapters for Book #15 and the total came out to 13. Hummmmm- okay, so I'm a bit superstitious- I needed one more chapter, can't turn in a book with 13 chapters in it (Just ask Jim Lovell the commander of Apollo 13). So, I went looking for a new chapter and while researching I stumbled across a story of lakeboats working their way through the ice on Lake Superior in the 1800s.
What makes that so special?
It takes place in JULY!