harvard professor of african american studies john stoffer joins us in the studios today. welcome. how are you? first of all, funny to think that frederick douglass was the most photographed person of his time am even more than abraham lincoln? >> more than ligon, grant, custard, walt whitman, more than any of his peers, which 19th century america, his influence, but more importantly, his love of photography and his recognition that this new technology could greatly advance his cause. karen: you compare the douglass use of the new technology of photography to a social movement that we see today. dr. stauffer: that is exactly right. he recognized the power of photography and took advantage in the same way we take advantage of the new technology today, like circulating through twitter, increasing the african-americans will not leave home without a camera. they recognize that it has certain tweet values. karen: look at this photograph of a very young frederick douglass. photograph by a great friend, a bostonian. it was taken in 1841, which coincides with the beginning of douglass' pub