William Bartelt, often referred to as Bill Bartelt, is an American historian and author based in Newburgh, Indiana. He is considered the greatest living scholar on Abraham Lincoln's youth in Indiana.

Newburgh is a borough in Ohio Township, Warrick County, Indiana, United States, along the Ohio River. The population was 3,325 at the 2010 census, although the town is part of the larger Evansville metropolitan area which recorded a population of 342,815, and Ohio Township, which Newburgh shares with nearby Chandler, has a population of 37,749 in the 2010 census with over 17,000 of those living in the town and areas adjacent to the town. It is the easternmost suburb of Evansville.