These mailable vintage-photograph postcards showcase the inclines that were completed in 1870 and 1877 by real estate speculators hoping to capitalize on undeveloped land at the top of Coal Hill, a name given due to its many coal mines. Housing in the valleys and other low-lying areas could not accommodate the influx of new residents following the Civil War. Using technology perfected to haul coal from mines, the region's first inclined railroads,...