Born in Morgan County, Ohio, Christy studied at Ohio State University and later at the Art Students League of New York. His work gained widespread popularity during the early 20th century, particularly through his posters for World War I recruitment and Liberty loans. Notable among his works is the masterpiece 'Scene at the Signing of the Constitution,' created in 1940.

Christy's artistic influences were likely rooted in American Realism, which sought to accurately depict everyday life in America. His artwork not only reflected his vision of American culture but also contributed significantly to its representation. Christy's legacy extends beyond his individual pieces, as he played a crucial role in shaping the visual identity of America during his time.

He remains an important figure in American art history, with his artistic style and themes continuing to inspire artists today.