A lone surveyor pushes into the unmapped interior of Pennsylvania, tracing the West Branch of the Susquehanna, the Sinnemahoning, and the Allegheny in 1790. The wilderness feels utterly raw. In this candid frontier exploration journal, Samuel Maclay records the daily realities of early American surveying: harsh terrain, shifting weather, river travel, and the fragile outposts edging into the 1790 Pennsylvania wilderness. Written on the spot as a primary source journal, it captures the sights, hardships and hesitations of a man measuring an unknown country long before railways or towns, offering an intimate window onto Susquehanna river valley history and the early American frontier. For readers drawn to early American travel narratives and the immediacy of the Lewis and Clark journals, Maclay's historic travel diary offers that same blend of observation, endurance and quiet wonder, rooted in Pennsylvania frontier exploration. Beyond its narrative power, the Journal Of Samuel Maclay stands as an important American history research source for understanding land policy, settlement patterns and the making of Pennsylvania. It will appeal to historians, genealogists, students of Susquehanna river valley history and Pennsylvania local history collectors alike, preserving voices from the edge of settlement. Out of print for decades and now republished by Alpha Editions, this historic account has been restored for today's and future generations. More than a reprint - a collector's item and a cultural treasure, presented so modern readers can encounter the 1790 frontier in Maclay's own words.