A community less than a square mile in size, Sharon Hill came into its own in the 19th century. The surroundings were mostly undeveloped until 1872, when the Philadelphia, Wilmington, and Baltimore Railroad ran its rails through the area. A few homes and farms dotted the landscape, and there were two passable roads. One main thoroughfare, known earlier as the Queen's Highway and now as Chester Pike, ran through the entire length of the town. With...