It required the building of Greenland's only (small and short) railroad.
The only railroad in Grafenwöhr is strictly for military use and transport only.
It was for a long while the only upstate railroad until what is now Norfolk Southern built a road around 1890.
The new traction line and was the only railroad in North America to use this system.
The Southern Pacific was the only railroad to operate engines of this wheel arrangement.
The only railroad in the watershed crosses the creek just north of the mouth.
This arrangement was named the Union Pacific type, after the only railroad to use it.
Thus, Washington lost one of its only railroad and telegraphic communications route to the North.
This was the only railroad into Hot Springs for 15 years.
It was the only land-grant railroad in Wisconsin.