On Fronteras: San Antonio’s African-American history is often overshadowed by those who fought for Texas independence. Aundar Ma’at and Born Logic Allah are working to add to the narrative of the city’s history with their documentary, ‘Walk on the River: A Black History of the Alamo City’ (0:16). And Texas Public Radio’s Ryan Poppe reports on one professor’s effort to identify and preserve historic black settlements (15:55).