Book excerpt: This book presents a county-by-county guide to historic landmarks in western Pennsylvania, and how to reach them. Twenty-seven counties are included, along with maps of each. Along the way, travelers will find historic forts, residences of leading citizens, old iron furnaces, grist mills, churches, inns, taverns, tanneries, and many other intriguing places. Historians Lois Mulkearn and Edwin V. Pugh personally visited each site, and provide background vignettes on them, offering interesting facts and highlights gathered from archival documents.