Although he spent nearly all of his professional life in the public eye, Jacob Lawrence has remained an elusive figure. A child of the Harlem Renaissance, Lawrence was born too late to be more than a perceptive eyewitness to that movement. A figurative artist whose small-scale paintings were driven by historical narratives, the artist reached maturity in an era that preferred grand, mute abstractions. Socially engaged but reticent to protest, a critical darling well removed...