Columbia subject headings:
Harvard subject headings:
Narrow gauge railroads--Yukon Territory--History.
Railroads--Yukon Territory--Construction--History.
White Pass & Yukon Route (Firm)--History.
Princeton subject headings:
Narrow gauge railroads--Yukon Territory--History.
Railroads--Yukon Territory--Construction--History.
White Pass & Yukon Route (Firm)--History.