Yardley topographic map

Average elevation: 19 m

Average elevation: 42 m

Average elevation: 53 m

Average elevation: 51 m

Average elevation: 37 m

Average elevation: 159 m

Average elevation: 17 m

Average elevation: 48 m

Average elevation: 83 m

Average elevation: 18 m

Average elevation: 131 m

Average elevation: 69 m

Average elevation: 172 m

Average elevation: 41 m

Average elevation: 67 m

An electric telegraph station was built in 1846, and the North Pennsylvania Railroad completed a branch to Doylestown in 1856. The first gas lights were introduced in 1854. Because of the town's relatively high elevation and a lack of strong water power, substantial industrial development never occurred and…

Average elevation: 108 m

Average elevation: 82 m

Average elevation: 39 m

Average elevation: 29 m

Average elevation: 113 m

Average elevation: 8 m

Average elevation: 21 m

Average elevation: 83 m

Average elevation: 94 m

Average elevation: 156 m

Average elevation: 79 m

Average elevation: 70 m