Louis Sullivan’s Ocean Springs, Mississippi, bungalow was built in the early 1890s as his Gulf Coast vacation home and became significant far beyond its modest scale because of its disputed design by Sullivan and Frank Lloyd Wright, two major figures in American architecture. Its association with both men led to its listing on the National Register of Historic Places. Restored in the 1980s, the cottage preserved a rare connection to Sullivan’s life on the Mississippi coast until Hurricane Katrina destroyed it in 2005. Though lost, it remains important as part of American architectural history and the Gulf Coast heritage erased by the storm.