Book excerpt: The rails and covered bridges of Frederick County are framed by the waters of the Potomac River to the south and the Mason-Dixon line to the north. The county rests at a crossroads of Maryland cultures and history, and journalist Marie Anne Erickson sought out the oldest members of this diverse community to record their colorful stories. Twenty years after the articles appeared as the "Crossroads" series for Frederick Magazine, Ingrid Price has compiled her mother's fascinating essays for the first time. Stories of Civil War battles and Prohibition-era raids share the pages with memories of sledding by moonlight and the hunt for the mythical Snallygaster in Erickson's spirited history. From Brunswick to Mount Airy and from Emmitsburg to Point of Rocks, discover an affectionate and occasionally offbeat portrait of Frederick County.