Nearly lost after its anonymous publication in 1926 and only recently rediscovered, When Washington Was in Vogue is an acclaimed love story written and set during the Harlem Renaissance. When bobbed-hair flappers were in vogue and Harlem was hopping, Washington, D.C., did its share of roaring, too.

Davy Carr, a veteran of the Great War and a new arrival in the nation's capital, is welcomed into the drawing rooms of the city's Black elite. Through letters, Davy regales an old friend in Harlem with his impressions of race, politics, and the state of Black America as...