After U-turns on the edges of grapefruit groves, repeated pullovers to study our Rio Grande Valley street guide, and a precarious three-point turn on the narrow levee road where a border patrol truck blocks our path, we are really lost. Like so many wanderers before us, we are searching for La Lomita Mission, which a local history buff named Frank told me about at an Edinburg bar the night before. “Just travel the Old Military Highway that goes along the Rio Grande,” Frank said. What Frank…
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