File Correspondence to Lou, May 13, 1919 Online In: Charles Brady Ryan papers, 1916-1919 » Correspondence » 1919
File Correspondence to Rhea Carroll, May 25, 1919 Online In: Charles Brady Ryan papers, 1916-1919 » Correspondence » 1919
File Correspondence to his parents, June 20, 1919 Online In: Charles Brady Ryan papers, 1916-1919 » Correspondence » 1919
File Correspondence, June 20, 1919, "on board SS "Porta" somewhere in the Arctic" Online In: Charles Brady Ryan papers, 1916-1919 » Correspondence » 1919