this is his second wife, peggy shippen. c-span: what year was that discovered? >> guest: this trunk? i think it was in the '40s or the '50s, right after world war ii. i'm not absolutely sure of the year. but once that came to light, obviously, arnold's scholarship was sort of given a whole new dimension. now, there have been books since then, but i still felt that nobody really got down to it and figured out why this man did what he did. that was my goal for myself. c-span: you say you retraced all these steps. how did you physically do that? >> guest: following my nose, asking around when i went up to lake champlain. there is a lake champlain maritime museum, and i got in touch with the director up there. i knew somebody who knew the director of crown point, and he said, "oh, you must call so-and-so." so i called so-and-so and he said, "oh, well, this is the person to take you out on a boat." so it's just a question of following your nose and making a lot of phone calls and setting it up before you go. but going out on a boat on lake champlain was just wonderfu