Postales features large, airbrushed paintings of houses from border neighborhoods, which were assimilated into the United States after the Chamizal dispute was formally settled in 1964. The dispute originated in the 19th century, when the Rio Grande River shifted its course between El Paso and Ciudad Juárez, granting the United States 600 acres of Mexican land.

The emptiness of the three lawn chairs (pink, white, and yellow) is central to the installation, implying a sense of displaced community. Several crossed street signs suspended from the ceiling further the effect, as the intersections they mark are those of Spanish words paired with their phonetic versions, as commonly mispronounced in English.