"No historian writes with such command of language or feeling for human nature. The difference is his luminous imagination, as Henry Steele Commager observes in the introduction to the newest Horgan volume, Of America East and West, a sumptuous selection from fifteen of the earlier works, many of which have been long out of print. I began reading Paul Horgan more than twenty years ago and he has given me no end of pleasure ever since. Whether in fiction,...