Mary E. Waller is the author of “ My Ragpicker.” This is the story of a little French girl whose only mother was the historic and somewhat forbidding cathedral of Notre Dame in Paris. To embrace a great stone pillar of this cathedral was to her like clinging to the knees of her mother. She knelt by it, clasped it in her arms, and pressed her aching head against it and found there refuge and comfort at a crisis hour in her life. When she was discovered by the artist who relates her story, her homeless, unhappy days were soon over.