The Blue Arch is a novel written by Alice Duer Miller and published in 1910. The story follows the lives of two women, Mary and Sally, who are both in love with the same man, John. As they navigate their feelings for John, they also face challenges in their personal lives and in society.Mary is a wealthy and privileged woman who has always had everything she wanted, including the attention of John. Sally, on the other hand, comes from a lower social...