To prove that the story could be told by the mothers themselves, ten thousand letters, with the assistance of Mary Boyd, were selected and these again cut to five hundred. Eventually this historical record appeared in book form as _Motherhood in Bondage_. Whenever I am discouraged I go to those letters as to a wellspring which sends me on re-heartened. They make me realize with increasing intensity that whoever kindles a spark of hope in the breast of another cannot shirk the duty of keeping it alive. _Woman and the New Race_, which sold at first for two dollars, had a distribution of two hundred and fifty thousand copies, and it made my heart ache to know that poor women who could ill afford it were buying the book and not finding there what they sought. To the best of my ability I tried to supply general information, but the only way of extending genuine aid was to persuade doctors to give it professionally. By a happy chance I met Dr. James F. Cooper, tall, blond, distinguished, a fine combination of missionary and physician, who left no stone unturned when a patient came to him, but devoted his whole attention to her—everything in her life was important to him. He was recently back from Fuchow, China, and was establishing himself in Boston as a gynecologist. Since he was thoroughly convinced of the vital necessity for birth control and could talk technically to his profession and interpret to the layman as well, my husband pledged his salary and expenses for two years, and I induced him to associate himself with us as medical director to go forth and try to convince the doctors throughout the country that contraceptive advice would save a large proportion of their women patients. In January, 1925, Dr. Cooper started on a tour which covered nearly all the states in the Union. In the course of the two years he delivered more than seven hundred lectures. Occasionally he was suspected of ulterior motives, of attempting to advertise the products he recommended, but this did not sway him from his persistence. Where he found laxity on the part of medical organizations he spoke to lay associations, which applied pressure on their own physicians, demanding information. As a result of this trip, doctors really began to awake to the problem of contraception, and when it was ended we had the names of some twenty thousand from Maine to California who had consented to instruct patients referred to them.