Pardy, George T. (December 22, 1923). "Feature Previews: Half-A-Dollar-Bill". Exhibitors Trade Review. 15 (4). New York: Exhibitors Review Publishing Corporation: 26. Retrieved May 4, 2022. This article incorporates text from this source, which is in the public domain.
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"Half-A-Dollar Bill". Lcweb2.loc.gov. November 10, 2017. Retrieved November 10, 2017.