George Bancroft (1800–1891), trained in the leading German universities, was a Democratic politician and accomplished scholar, whose magisterial "History of the United States, from the Discovery of the American Continent" covered the new nation in depth down to 1789. Bancroft was imbued with the spirit of Romanticism, emphasizing the emergence of nationalism and republican values, and rooting on every page for the Patriots. His masterwork started appearing in 1834, and he constantly revised it in numerous editions. Along with John Gorham Palfrey (1796–1881), he wrote the most comprehensive history of colonial America. Billias argues Bancroft played on four recurring themes to explain how America developed its unique values: providence, progress, patria, and pan-democracy. "Providence" meant that destiny depended more on God than on human will. The idea of "progress" indicated that through continuous reform a better society was possible. "Patria" (love of country) was deserved because America's spreading influence would bring liberty and freedom to more and more of the world. "Pan-democracy" meant the nation-state was central to the drama, not specific heroes or villains. Bancroft was an indefatigable researcher who had a thorough command of the sources, but his rotund romantic style and enthusiastic patriotism annoyed later generations of scientific historians, who did not assign his books to students. Furthermore, scholars of the "Imperial School" after 1890 took a much more favorable view of the benign intentions of the British Empire than he did. In 1791 the Massachusetts Historical Society became the nation's first state historical society; it was a private association of well-to-do individuals with sufficient leisure, interest, and resources for the society to prosper. It set a model that every state followed, although usually with a more popular base and state funding. Archivist Elizabeth Kaplan argues the founding of a historical society begins an upward spiral with each advance legitimizing the next. Collections are gathered that support publication of documents and histories. These publications in turn give the society and its topic legitimacy and authenticity. The process creates a sense of identity and belonging. The builders of state historical societies and archives in the late 19th and early 20th century were more than antiquarians—they had the mission of creating as well as preserving and disseminating the collective memories of their communities. The largest and most professional collections were built at the State Historical Society of Wisconsin in Madison by Lyman Draper (1852–1887) and Reuben Gold Thwaites (1887–1913).