Robert Lopez's grandfather Sixto was born in Mayaguez, Puerto Rico, in 1904, immigrating to the United States in the 1920s, where he lived in a racially proportioned apartment complex in East New York, Brooklyn, until his death in 1987. The family's efforts to assimilate within their new homeland led to the near complete erasure of their heritage, culture, and language within two generations.

Little is known of Sixto—he may have been a longshoreman, a painter, or a boxer, but was most likely a longshoreman—or why he originally decided to leave Puerto Rico, other than that he was a meticulously slow eater who played the standup keyboard and guitar, and enjoyed watching baseball. Through family recollection, the constant banter volleyed across nets within Brooklyn's diverse tennis community, as well as an imagined fabulist history drawn from Sixto's remembered traits, in Dispatches From Puerto Nowhere: An American Story of Assimilation and Erasure, Robert Lopez paints a compassionate portrait of family that attempts to bridge the past to the present, and reclaim a heritage threatened by assimilation and erasure.