[Postcard of Illecillewaet Glacier], postcard, 19uu; (https://texashistory.unt.edu/ark:/67531/metapth702698/m1/1/: accessed July 17, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu; .
[Postcard of Illecillewaet Glacier], postcard, 19uu; (https://texashistory.unt.edu/ark:/67531/metapth702698/m1/1/: accessed July 17, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu; .