Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Brief background on Wm Lewis Herndon

I have not purchased this book yet but I know the story and I will purchase this book. I wanted to make note of some historical interests. William Lewis Herndon explored the Amazon and wrote and illustrated a book on it (I have his book) under command of then "Lieutenant" Matthew Fontaine Maury (my ancestor) long before this sinking. W L Herndon was Matthew Fontaine Maury's cousin and brother in law. M F Maury m. Ann Hull Herndon of Virginia. These are Virginia families out of Fredericksburg, Va. (See oceanography for M F Maury since he is the founder of the science) On the White House website under first ladies, look for Ellen Herndon-Arthur. She was the only daughter of W L Herndon (& neice of M.F. Maury and he is mentioned on the White House website) who married Chester Alan Arthur who became a U.S. President.Kind regards, Maury