The Civil War was the first "modern war." Because of the rapid changes in American society, Abraham Lincoln became president of a divided United States during a period of technological and social revolution. Among the many modern marvels that gave the North an advantage was the telegraph, which Lincoln used to stay connected to the forces in the field in almost real time.<BR>Mr. Lincoln's T-Mails tells a big story within a small compass. By paying close attention to Lincoln's "lightning messages," we see a great leader adapt to a new medium. No reader of this work of history will be able to miss the contemporary parallels. Watching Lincoln carefully word his messages - and follow up on those words with the right actions - offers a striking example for those who spend their days tapping out notes on computers and BlackBerrys.