Portal:San Diego County/Did you know/7
- ...that Brigadier General Francis C. Marshall had just visited Camp Hearn prior to dying in a plane crash?
- ...that the historic La Playa Trail (shown on 1850 map) in San Diego is the oldest commercial trail in the western United States?
- ...that the historic U.S. Custom House in San Ysidro, San Diego, lies 50 feet (15 m) north of one of the busiest land border crossings in the world?