In 1900, the White Pass & Yukon Route completed its railroad line between Skagway, Alaska and Whitehorse, Yukon. In 1901, the company entered the steamboat business to complete the service to points on the Yukon River. Beginning in 1901, the White Pass was almost the exclusive operator on the Upper Yukon River (Whitehorse-Dawson City). The service also included Tagish Lake and Atlin Lake, the headwaters of the Yukon River.