Mount Pleasant Silk Culturist And Farmer's Manual: Devoted To The Growth And Manufacture Of Silk And Beet Sugar, And The Improvement Of Agriculture, Horticulture, And Rural And Domestic Economy (from 1839)
Our distances are not driving distances, but are calculated as a 'straight-line' distance. A straight line distance ignores obstructions like rivers, canyons, lakes, et cetera - it's truly a line drawn from Point A (ie- Ursina) to Point B. In other words: 'As the crow flies'.