"Proving Ground" by Kathy Kleiman is a fascinating book that tells the untold story of the six women who programmed the world's first modern computer. This hardcover book is a must-read for anyone interested in the history of computing and the role of women in technology. With multiple title variations, including an eBook version, this book is accessible to a wide audience. The author, Kathy Kleiman, provides a detailed and engaging account of the groundbreaking work of these six women, shedding light on their contributions to the field of computer science.