"The Employments of Women: A Cyclopædia of Woman's Work" by Virginia Penny
Penny was a social reformer and an economist, being the first to study women's labor markets both in the U.S. and in Europe. As such, her work has been influential and resourceful in women's studies. This book, for example, helped describe the careers available to women in an ambiguous world where women's work could mean many different things.