Editor's note: This is the tenth entry in the writer's year-long project to read one book about each of the U.S. Presidents by Election Day 2016. You can also follow Marcus' progress at the @44in52 Twitter account and with this 44 in 52 Spreadsheet.
To be honest, I'm not sure where to start with John Tyler. Which is probably exactly how then-Vice President Tyler felt on the morning of April 2, 1841 when he was informed of the death of President William Henry Harrison
No one knew what would happen when Harrison died just a month into office; a president had never died in office before. What kind of president would a man who had been Veep for exactly one month be?