Epistolary threats of this kind were sent almost daily to the wives of the officers and officials, and, if published, the collection would form a volume in itself. The threats I have given are only a tithe of the whole, but I have given enough to illustrate the general trend of the letters. We paid no attention to them, but the women, of more delicate and sensitive disposition, took them more to heart. The constant receipt of such letters naturally made a deep impression on their minds, and some of the ladies had dark forebodings. But the officers always took a cheerful view, and urged that it was only cowards who resorted to threats. They still continued their work, undaunted by these denunciations and menaces, and frequently remained out all night in their work in some of the most desperate districts of the city, sometimes keeping up forty-eight hours at a stretch. Mrs. Schaack, a generally strong and courageous woman and deeply interested in all my work, did not bear up as well as some of the others under the pressure. She had been sick for over eight months, and, when these letters began to reach her, she had just reached a convalescent state. Having thus passed through a long siege of illness, her system was in a highly nervous condition, and it was, therefore, quite natural that sometimes she should become greatly solicitous for my personal safety whenever a very savage and gory letter accidentally reached her eye. When the trial finally began, I begged her to take the three children and visit for two months a place six hundred miles away from Chicago, where she could not only enjoy a comparative serenity of mind, but build up her shattered constitution, under more favorable circumstances and climatic conditions. She acted on my advice. While away, she was in constant receipt of such letters as were calculated to make her reassured as to my comfort, and she rapidly gained in health and strength. Mrs. Grinnell bore up remarkably well under the severe strain. She had come in for a goodly share of these murder-threatening letters, but, being blessed with good health and strong nerves, she never displayed signs of weakness. She was a brave lady. Whenever I saw her with Mr. Grinnell, she would always say: “Captain, I want you and Mr. Grinnell and all the boys to keep on with your noble work.” She at all times appeared very pleasant and not the least disturbed. Mrs. Furthmann was not overlooked by the letter-writers, but her husband arranged matters so that their epistles did not fall into her hands. He would gather them in, and, with what the mail brought him every day for his own individual benefit, he had plenty of hair-raising literature. But he paid no attention to the threats and never for a moment relaxed his efforts on account of them. These letters became so numerous and frequent that after a time the officers would jestingly allude to them as their “love letters.”