Subotnik, Eva E., and June M. Basek. “Constitutional Obstacles? Reconsidering Copyright Protection for Pre-1972 Sound Recordings”. The Columbia Journal of Law & the Arts 37, no. 3 (July 8, 2014): 327–378. Accessed June 30, 2024. https://journals.library.columbia.edu/index.php/lawandarts/article/view/2140.