The sisters of Summit avenue, Lynn Cullen, genre: roman Lynn Cullen has given us a truly lovely gift: a fascinating, complex study of the ties that bind mothers, sisters, and daughters. The depression-era setting is vividly captured; the behind-the-scenes glimpses into the world of advertising, in the form of Betty Crocker, fascinating. But it's the poignant, beautifully rendered story of two sisters who find the courage to reclaim their bond after years of misunderstandings and heartbreak that you will remember, and cherish.