. >> safer: mister jay's library is replete with documents about cons, scams, and hoaxes of all kindsing animals... >> and the cynocephalus was often featured on circus lots. and then, eventually people realized that the cynocephalus was a baboon wearing lederhosen. >> safer: (laughs) celebrated conmen, including count victor lustig... >> this is an original wanted poster of the count. one of the things he did in france was he was able to sell the eiffel tower for scrap metal. and he was able to do it twice, which is sort of wonderful. >> safer: mr. jay reports that over the years, people really have tried to sell the brooklyn bridge as well as nelson's column in trafalgar square in london. and in another cautionary tale, pigeons were both the investors and the investment. (watch ticking) >> stahl: coming up... >> i've have such tremendous for the live birds. >> stahl: the pigeon king next when "60 minutes" on cnbc returns. when "60 minutes" on cnbc returns. (watch ticking) [ male announcer ] here's a question for you: where does the united states get most of its energy? is it africa?