Gwendolyn Salisbury Hughes ; prepared through the co-operation of the Carola Woerishoffer, Graduate Department of Social Economy and Social Research of Bryn Mawr College and Seybert Institution of Philadelphia
"Of this study, section I, 'Causes which take mothers into industry,' except that part of chapter I which presents conclusions based on section II, and the 'Appendix' including the 'Bibliography' constitute a dissertation presented to the faculty of Bryn Mawr college in partial fulfillment of the requirements for the degree of doctor of philosophy by Gwendolyn Salisbury Hughes."