Thomas Lynch Montgomery was an American historian and author, primarily recognized for his contributions to the documentation of Pennsylvania's history. Born in 1862, he dedicated much of his career to the study and preservation of historical records, particularly through his work with the Pennsylvania Archives. His most notable publication, 'Pennsylvania Archives: Fifth Series,' is a significant compilation of documents that shed light on the state's governmental and social history during the colonial and early statehood periods. Montgomery's meticulous approach to historical research and his commitment to archiving vital records have made him a respected figure in the field of American history. Throughout his career, Montgomery served as the state historian of Pennsylvania and was instrumental in promoting the importance of historical preservation. His work not only provided valuable insights into Pennsylvania's past but also influenced future generations of historians and researchers. By emphasizing the need for accurate historical documentation, Montgomery helped lay the groundwork for modern historical scholarship in the region. His legacy endures through the archives he championed and the historical narratives he helped to construct, ensuring that the rich history of Pennsylvania remains accessible to future scholars and the public alike.