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Photographic postcard by Byron Harmon of Vermillion Lakes with Mount Rundle in background. It features an R style back.

Photographic postcard by Byron Harmon of Mount Rundle as viewed from Banff Windermere Auto Road, now known as Banff Windermere Highway. Postcard has writing on front. It features a P1 style back.

Photographic postcard by Byron Harmon of Mount Rundle as viewed from Banff Windermere Auto Road, now known as Banff Windermere Highway. It features an R style back.

Photographic postcard by Byron Harmon of the entrance to Cave and Basin Sulphur Springs, now known as the Cave and Basin National Historic Site in Banff. It features an R style back.

Photographic postcard by Byron Harmon of an elevated view of Banff with Goat Mountain in the background. It features an M1 style back.

Photographic postcard by Byron Harmon of Mount Eisenhower, now known as Castle Mountain. It features an R style back.

Photographic postcard by Byron Harmon of Castle Mountain as viewed from Banff Windermere Road, now known as Banff Windermere Highway. It features an R style back.

Photographic postcard by Byron Harmon of Castle Mountain as viewed from Banff Windermere Road, now known as Banff Windermere Highway. It features an R style back.

Photographic postcard by Byron Harmon of Castle Mountain as viewed from Banff Windermere Road, now known as Banff Windermere Highway. It features an R style back.

Photographic postcard by Byron Harmon of Lake Louise with mountains in background. Postcard has handwritten address, handwritten message, and incomplete postmark on back. It features an R style back.

Photographic postcard by Byron Harmon of Lake Louise with mountains in background. It features an R style back.

Photographic postcard by Byron Harmon of Lake Louise with mountains in background. It features an R style back.

Photographic postcard by Byron Harmon of Lake Louise with mountains in background. It features an R style back.

Photographic postcard by Byron Harmon of Lake Louise with mountains in background. It features an R style back.

Photographic postcard by Byron Harmon of Lake Louise with mountains in background. It features an R style back.

Photographic postcard by Byron Harmon of an elevated view of Banff with Goat Mountain in the background. It features an M1 style back.

Photographic postcard by Byron Harmon of Lake Louise with mountains in background. It features an R style back.

Photographic postcard by Byron Harmon of Lake Louise with mountains in background. Postcard has handwritten address, handwritten message, and incomplete postmark on back. It features an R style back.

Photographic postcard by Byron Harmon of Lake Louise with mountains in background. It features a P1 style back.

Photographic postcard by Byron Harmon of Lake Louise with mountains in background. Postcard has handwritten address, handwritten message, and incomplete postmark on back. It features an R style back.

Photographic postcard by Byron Harmon of Lake Louise with mountains in background. Postcard has handwritten message on back. It features an R style back.

Photographic postcard by Byron Harmon of the Beehive, now known as Big Beehive, beside Bridal Veil Falls. It features a P2 style back.

Photographic postcard by Byron Harmon of the Beehive, now known as Big Beehive, beside Bridal Veil Falls. It features an R style back.

Photographic postcard by Byron Harmon of the Beehive, now known as Big Beehive, beside Bridal Veil Falls. Postcard has handwritten message on back. It features an R style back.

Photographic postcard by Byron Harmon of Maligne Lake with Mount Paul on left and Mount Julian on right. It features an O3 style back.

Photographic postcard by Byron Harmon of Maligne Lake with Mount Paul on left and Mount Julian on right. It features an R style back.

Photographic postcard by Byron Harmon of an elevated view of Banff with Goat Mountain in the background. It features an N style back.

Photographic postcard by Byron Harmon of Maligne Lake with Mount Paul on left and Mount Julian on right. It features an R style back.

Photographic postcard by Byron Harmon of an elevated view of Lake Louise and the Chateau as viewed from Victoria Glacier. It features a P2 style back.

Photographic postcard by Byron Harmon of an elevated view of Lake Louise and the Chateau as viewed from Victoria Glacier. Postcard has handwritten note on back. It features an R style back.

Photographic postcard by Byron Harmon of an elevated view of Lake Louise and the Chateau as viewed from Victoria Glacier. Postcard has handwritten note on back. It features a P1 style back.

Photographic postcard of a Byron Harmon photo of Maligne Lake with Mount Sanson in background. It features a 6c style back, which attributes the postcard to F.A. Jackman.

Photographic postcard by Byron Harmon of Mount Temple as viewed from Lake Louise Road. It features an R style back.

Photographic postcard by Byron Harmon of Mount Temple as viewed from Lake Louise Road. It features an R style back.

Photographic postcard by Byron Harmon of Mount Temple as viewed from Lake Louise Road. It features an R style back.

Photographic postcard by Byron Harmon of Mount Temple as viewed from Lake Louise Road. It features an R style back.

Photographic postcard by Byron Harmon of the Tower of Babel near Moraine Lake. It features a P1 style back.

Photographic postcard by Byron Harmon of a close up of a single deer. It features an R style back.

Photographic postcard by Byron Harmon of an elevated view of Banff with Goat Mountain in the background. It features an N style back.

Photographic postcard by Byron Harmon of the Tower of Babel near Moraine Lake. It features an R style back.

Photographic postcard by Byron Harmon of Lake Louise Road with Mount Hector in background. It features an R style back.

Photographic postcard by Byron Harmon of Lake Louise Road with Mount Hector in background. It features an R style back.

Photographic postcard of a Byron Harmon photo of a person next to a canoe on Maligne Lake with Sanson Peak in background. Postcard has handwritten note on back. It features a 5b style back, which attributes the postcard to F.A. Jackman.

Photographic postcard by Byron Harmon of Vermillion Range as viewed from Banff-Windermere Auto Road, now known as Banff Windermere Highway. It features an R style back.

Photographic postcard by Byron Harmon of Moraine Lake Lodge with Mount Temple in background. It features a P1 style back.

Photographic postcard by Byron Harmon of Moraine Lake Lodge with Mount Temple in background. It features an R style back.

Photographic postcard by Byron Harmon of Banff Avenue with Cascade Mountain in background. It features an R style back.

Photographic postcard by Byron Harmon of Banff Avenue with Cascade Mountain in background. It features an R style back.

Photographic postcard by Byron Harmon of Banff Avenue with Cascade Mountain in background. It features an R style back.

Photographic postcard by Byron Harmon of an elevated view of Banff with Goat Mountain in the background. It features an R style back.

Photographic postcard by Byron Harmon of Banff Avenue with Cascade Mountain in background. It features an R style back.

Photographic postcard by Byron Harmon of Banff Avenue with Cascade Mountain in background. It features an R style back.

Photographic postcard of a Byron Harmon photo of Pyramid Mountain in Jasper National Park with Pyramid Lake in foreground. It features a Zo3 style back with no attribution to Harmon.

Photographic postcard of a Byron Harmon photo of Pyramid Mountain in Jasper National Park with Pyramid Lake in foreground. It features a 6a style back, which attributes the postcard to F.A. Jackman.

Photographic postcard of a Byron Harmon photo of Pyramid Mountain in Jasper National Park with Pyramid Lake in foreground. It features a 6c style back, which attributes the postcard to F.A. Jackman.

Photographic postcard of a Byron Harmon photo of Pyramid Mountain in Jasper National Park with Pyramid Lake in foreground. It features a 6a style back, which attributes the postcard to F.A. Jackman.

Photographic postcard by Byron Harmon of the Lake Agnes Tea Room next to a waterfall. It features a P2 style back.

Photographic postcard by Byron Harmon of the Lake Agnes Tea Room next to a waterfall. It features an R style back.

Photographic postcard by Byron Harmon of the Lake Agnes Tea Room next to a waterfall. It features an R style back.

Photographic postcard by Byron Harmon of a car driving through Sinclair Canyon. It features an R style back.

Photographic postcard by Byron Harmon of an elevated view of Banff with Goat Mountain in the background. It features an R style back.

Photographic postcard by Byron Harmon of people standing near Lake McArthur with Mount Biddle in background of Yoho National Park. It features an R style back.

Photographic postcard of a Byron Harmon photo of a person standing inside Maligne Canyon in Jasper National Park. It features a 5b style back, which attributes the postcard to F.A. Jackman.

Photographic postcard by Byron Harmon of Lake Louise with flowers in foreground and mountains in background. It features a P2 style back.

Photographic postcard by Byron Harmon of Lake Louise with flowers in foreground and mountains in background. It features an R style back.

Photographic postcard by Byron Harmon of Lake Louise with flowers in foreground and mountains in background. It features an R style back.

Photographic postcard by Byron Harmon of Lake Louise with flowers in foreground and mountains in background. It features an R style back.

Photographic postcard by Byron Harmon of a black bear and two cubs. It features an O3 style back.

Photographic postcard by Byron Harmon of a black bear and two cubs. It features an R style back.

Photographic postcard by Byron Harmon of a black bear and two cubs. It features an R style back.

Photographic postcard by Byron Harmon of a black bear and two cubs. It features an R style back.

Photographic postcard by Byron Harmon of an elevated view of Banff with Goat Mountain in the background. It features an R style back.

Photographic postcard by Byron Harmon of a black bear and two cubs. Postcard has handwritten message on back. It features an R style back.

Photographic postcard by Byron Harmon of a black bear and two cubs. It features an R style back.

Photographic postcard by Byron Harmon of a black bear and two cubs. Postcard has handwritten address, handwritten message, and incomplete postmark on back. It features an R style back.

Photographic postcard of a Byron Harmon photo of a person standing inside Maligne Canyon in Jasper National Park. It features a 6c style back with no attribution to Harmon.

Photographic postcard by Byron Harmon of a rocky mountain bighorn sheep. It features an R style back.

Photographic postcard by Byron Harmon of a rocky mountain bighorn sheep. It features an R style back.

Photographic postcard by Byron Harmon of a rocky mountain bighorn sheep. It features an R style back.

Photographic postcard of a Byron Harmon photo of a rocky mountain bighorn sheep. It features a 6c style back, which attributes the postcard to F.A. Jackman.

Photographic postcard by Byron Harmon of the Chateau Lake Louise with Lake Louise in foreground. It features an R style back.

Photographic postcard by Byron Harmon of the Chateau Lake Louise with Lake Louise in foreground. It features an R style back.

Photographic postcard by Byron Harmon of an elevated view of Banff with Goat Mountain in the background. It features an R style back.

Photographic postcard by Byron Harmon of the Chateau Lake Louise with reflection of the Chateau on Lake Louise in foreground. It features an R style back.

Photographic postcard by Byron Harmon of the Chateau Lake Louise with reflection of the Chateau on Lake Louise in foreground. It features an R style back.

Photographic postcard by Byron Harmon of the Chateau Lake Louise with reflection of the Chateau on Lake Louise in foreground. It features an R style back.

Photographic postcard by Byron Harmon of the Chateau Lake Louise with reflection of the Chateau on Lake Louise in foreground. It features an R style back.

Photographic postcard by Byron Harmon of the Chateau Lake Louise with reflection of the Chateau on Lake Louise in foreground. It features an R style back.

Photographic postcard by Byron Harmon of the Chateau Lake Louise with reflection of the Chateau on Lake Louise in foreground. It features an R style back.

Photographic postcard by Byron Harmon of the Chateau Lake Louise as viewed between trees with Lake Louise in foreground. It features an R style back.

Photographic postcard by Byron Harmon of the Chateau Lake Louise as viewed between trees with Lake Louise in foreground. It features an R style back.

Photographic postcard by Byron Harmon of the Chateau Lake Louise as viewed between trees with Lake Louise in foreground. It features an R style back.

Photographic postcard by Byron Harmon of the Chateau Lake Louise as viewed between trees with Lake Louise in foreground. It features an R style back.

Photographic postcard by Byron Harmon of an elevated view of Banff with Goat Mountain in the background. It features an R style back.

Photographic postcard by Byron Harmon of the Chateau Lake Louise as viewed between trees with Lake Louise in foreground. It features an R style back.

Photographic postcard by Byron Harmon of the Chateau Lake Louise as viewed between trees with Lake Louise in foreground. It features an R style back.

Photographic postcard by Byron Harmon of a close view of the Chateau Lake Louise. It features an R style back.

Photographic postcard by Byron Harmon of a close view of the Chateau Lake Louise. It features an R style back.

Photographic postcard by Byron Harmon of a close view of the Chateau Lake Louise. It features an R style back.

Photographic postcard by Byron Harmon of a close view of the Chateau Lake Louise. It features an R style back.