Why would one wait fifteen years to publish a book about Louisiana? Antoine-Simon Le Page du Pratz had to cover alot of ground at that time! Still. It is curious that he would wait such a long time to publish his work. I found this Google Book reference to Antoine-Simon Le Page du Pratz book about Louisiana.
March of the Peace Pipe, by Antoine-Simon Le Page du Pratz 1758
– Le Page du Pratz signature on a letter to his mother from Natchez, 1 February 1724 Chicago History Museum. Image from Gordon Sayre, Associate Professor of English, University of Oregon (Mr. Sayre indicates that duPratz’s title was never fully translated into English (dated 2010), but I found du Pratz’s title in a Project Gutenberg ebook online since 2003. here. Perhaps a few things were lost in translation as Mr. Sayre offers a few more translations at his website. After all the title is a mere 255 years old.