Dr. Brothers wrote ten books during her career, beginning with 10 Days to a Successful Memory in 1957 and ending with Widowed in 1990. Tips for success and healthy relationships were her most frequent themes. Brothers’ most popular and personal book was Widowed, which she wrote after the death of her husband in 1989. For the next decade, she received thousands of letters from readers who found comfort in her words. She kept all of them, and they now reside in her archival collection.