[Rockefeller's Event Calendar: February 1990], pamphlet, January 1990; (https://texashistory.unt.edu/ark:/67531/metapth1544957/m1/2/: accessed July 18, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu.; .
[Rockefeller's Event Calendar: February 1990], pamphlet, January 1990; (https://texashistory.unt.edu/ark:/67531/metapth1544957/m1/2/: accessed July 18, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu.; .