. >> now joining us on booktv to preview the upcoming new book, best selling author, bill bryson, one summer america, 1927, the name of the book. why "1927"? >> i stumbled into it really. i was always fascinated by the fact that ruth hit 16 home runs and the atlantic in the same summer, the summer of 1927 so i had it in mind that that in itself made it an interesting summer, that two iconic events happened in exact parallel, and maybe it was interesting to do a dual biography of the two guys with the narrative arts meeting in the summer of 1927. that was the starting point. when i looked into what else happened in 1927, i found that those were only just two tiny parts of the much greater hall. there was other stuff happening that summer, the great mississippi flood that year, the biggest natural disaster in america history, and you had al capone, the beginning of the end of al capone, the down fall, and, indeed, of prohibition, and the information that prohibition was coming to an end. they started building mount rushmore, and calvin coolidge announced he didn't want to run for reelec