It also conducted the first scientific studies of the region and produced the first map of the entire Yukon River .
In 1865 , Western Union laid a telegraph line across Alaska to the Bering Strait where it would connect , under water , with an Asian line .
Alaska also conducted the first scientific studies of the region and produced the first map of the entire Yukon River .
In 1865 , Western Union laid a telegraph line across Alaska to the Bering Strait where it would connect , under water , with an Asian line .