True Comics #19

True Comics #19 is an anthology featuring 15 exciting factual features. Stories visible include "Room 40: Headquarters of the British Secret Service and the German Naval Code Book," which depicts how British operatives guarded a German naval codebook during World War I, with the codebook eventually sinking to the bottom of the sea before being recovered; "Conqueror of the White Plague," about Dr. Edward Trudeau of Saranac, New York, who discovered a fresh air cure for tuberculosis; and an educational quiz titled "Is It True?" by Natalie Purvin Praeger, originator of the March of Games radio quiz, featuring twenty true-or-false questions about nature, history, and wildlife.