Mirror-still waters reflect the snow-streaked ramparts of Mount Burgess at Emerald Lake in British Columbia's Yoho National Park — silhouetted spruces frame the foreground in inky black against a pale tinted sky, a composition that ranks among the most iconic Canadian Rockies postcard subjects of the early twentieth century. Published by the Gowen, Sutton Co. Ltd. of Vancouver, British Columbia, this hand-tinted real-photo-style card (number 352 in the series) captures the lake that Canadian Pacific Railway surveyor Tom Wilson first encountered in 1882 and that soon became a star attraction for CPR-promoted tourism. The back is entirely unused — never written, never mailed — preserving the card in excellent original condition.