Monticello Carnegie Library, also known as the White County Historical Society, is a former library in the historic Carnegie library building located at Monticello, White County, Indiana. It was built in 1907, and is a two-story, Classical Revival style buff brick building on a raised basement. It features a large limestone entrance portico and full round arched window openings. A two-story addition was built in 1957. The original building was constructed with a $10,000 grant from the Carnegie Foundation.