By Hunter Marion. Nestled between the slow, muddy waters of the Trinity River and the noisy I-45, sits Joppa, TX. Pronounced “Joppee” by locals, Joppa is a neighborhood located at Dallas proper’s southernmost point. It was founded by freed Black people shortly after the abolition of slavery in the 1870’s. Generations of residents lived relatively isolated from the growing metropolis until the town was annexed by the city of Dallas in 1955. That annexation saw the gradual introduction of industrialization into the formerly forest-covered community. Pacific-Union built a railway cutting