Analysis of information sources in references of the Wikipedia article "Greenwood, Indiana" in English language version.
The progressive city of Greenwood is one of 19 Indiana communities that once had an unwritten 'sundown law' forbidding Negroes to be in town after dark according to the Indiana Civil Rights Commission. ... The Civil Rights Commission noted that several Negroes lived in Greenwood until the 1920s. Several were highly respected and one graduated from Greenwood high school. Since then the town has been exclusively white.
A Study of "Sundown Ordinances" in Nineteen Indiana Towns and Cities. Greenwood Case Illustrates Housing Problem Facing Negroes.