Rand McNally and Company. "July 1927 : Directors of National and State Banks," Rand McNally Bankers Directory (September 1927). https://fraser.stlouisfed.org/title/105/item/598442/content/pdf/rmbd_192707_15_directorsofnationalandstatebanks, accessed on December 3, 2023.
http://rightsstatements.org/vocab/NoC-US/1.0/