Since Mary Pickersgill sewed Old Glory on the floor of a local brewery, Baltimore has been a beer-drinking town. At the turn of the nineteenth century, German immigrants erected elaborate breweries and leafy beer gardens, and the thirteen awful years of Prohibition only whetted the city's thirst for frosty pints. By the 1950s, Gunther and National Bohemian had joined advertising forces with the Orioles and the Colts in a spirited battle with American, Free State and Arrow for the palates and wallets of the Chesapeake Bay's burgeoning beer-drinking population. Baltimore beer scholar and journalist Rob Kasper traces the sudsy story from the days when alehouses lined the Jones Falls to the tales behind the current crop of local brewers who are fermenting a craft brew revival.