Although the Underground Railroad has been an integral part of U.S. history and folklore for well over 150 years, the recent past has seen an increased public interest in the identification of historic sites associated with the experiences of fugitive slaves. This booklet is part of a National Park Service initiative to design research methods which address U.S. history in a more integrated, diverse, and complex way. Following an introduction, the booklet is divided into Part I Historic Context for the Underground Railroad; Part II Using Primary Sources: The Historians' Toolbox; and Part III Tracking Escape: A Case Study. It concludes with a narrative review of sources. (BT)