Book excerpt: Drawing on diaries, private letters, memoirs, and reportage, David Colbert's acclaimed Eyewitness books offer extraordinary first-hand views of history's pivotal moments. Eyewitness to Wall Street's combination of remarkable perspectives and a subject of exceptional current interest results in the richest and most illuminating Eyewitness book yet.From our first IPO -- the European fund-raising that launched America's colonization -- through today's mass obsession with the Dow and Nasdaq, Eyewitness to Wall Street brims with accounts from people who saw it happen -- poets and speculators, patriots and criminals, politicians and reporters -- including Daniel Defoe, Mark Twain, Franklin D. Roosevelt, Warren Buffet, and Michael Lewis. It reveals how Wall Street traders saved the Continental Army from bankruptcy and helped finance the Union during the Civil War; how Americans were suckered by the bull market of early 1929 and struggled through the rebuilding of modern Wall Street. More than halfthe book is devoted to the contemporary era, defined by the "greed is good" 1980s, the bull market 1990s, and the dot-com millionaires and infla