Replica source: Patent for Basket ball, filed March 5, 1928, and issued June 25, 1929 Patent No. US1718305A. https://patents.google.com/patent/US1718305A/en.

"The 13 Original Rules of Basketball," QHF Sports, Online Text. https://qhfsports.com/layout-design/the-13-original-rules-of-basketball/.