Invasion literature remains an inspiration for public policy to this day.
John Henry Flood , Jr. -LRB- January 16 , 1878 - March 29 , 1958 -RRB- was a mining engineer who worked as Wyatt Earp 's unpaid personal secretary late in Earp 's life , completing the only authorized biography of Earp .. Wyatt Earp. Wyatt Earp. But the language he used in the biography was overblown , florid , stilted and so badly written that nobody would publish it .