. >> patrick, in your book about mark catesby, you didn't have a plethora of original sources or letters that mark left behind. you do a splendid job researching and putting context in and around that period of time in england and in early charleston, but talk a bit about, i guess, that struggle and how you overcame it in bringing your subject to life in the book and then walking us through his life until his death, i believe, at the age of 66. >> sure. before i do that, i do want to say that i wanted to mention jack knows this pretty well, but catesby's first plate in the natural history of carolina was the bald eagle. speaking of ecological relationships, the bald eagle persuaded an osprey to gift the eagle a fish that the osprey has caught and you have the osprey in the background looking, i'm not sure what the expression is. [laughter] >> anyway, that's plate one of the natural history. >> yeah, i love that. i love that image and, but, yes, the sources were a little thin on the ground. we have no known image of catesby himself. we have no letters of his before he reaches south caroli