On Wednesday, July 18, Rachel Surls and Judith Gerber, co-authors of From Cows to Concrete: The Rise and Fall of Farming in Los Angeles, will give an illustrated look back at our farming heritage and explore such history as the Tongva people who lived along Ballona Creek, the missionaries that brought European agricultural knowledge to the area, the rancho owners that cultivated West Los Angeles and raised cattle, and the beginnings of California’s citrus and winemaking empire.