Carl Sandburg lived in Oshkosh

Yep. American poet Carl Sandburg lived on Wisconsin Street in 1908 while working as a labor organizer. The house has since been razed but it was said to be located near the present day location of Kelly's Bar.

Sandburg wrote of Oshkosh in a letter dated 1908,

“Once in my callow days I thot Oshkosh was like Heaven, Nirvana, Sheol, The North Pole; mythical, imaginary, fictive and hopeless of attainment – but here it is!”

Source: Sandburg, Carl. The Letters of Carl Sandburg. New York: Harcourt, Brace & World, 1968, pp. 58-59.