Since Yesterday chronicles the transformative decade of the 1930s in America, a period marked by the Great Depression and profound social upheaval. Frederick Lewis Allen, a renowned historian of American life, meticulously details the events, cultural shifts, and everyday experiences that defined this era. The book examines how the economic collapse reshaped the nation's psyche and led to significant political and social changes, from the New Deal to evolving social norms.

Frederick Lewis Allen's 'Since Yesterday' is widely regarded as a seminal work on the 1930s, praised for its comprehensive scope and engaging narrative style. It is often cited by historians for its insightful analysis of the decade's social and economic transformations. The book provides a vivid portrait of a nation grappling with unprecedented challenges and emerging with a changed identity. Its accessible prose makes complex historical events understandable to a broad readership, solidifying its place as a key text for understanding modern American history.