Historic Denver

Historic Denver's offices have moved.
We are now in the Tattered Cover Building
1628 16th Street, Suite 200
Denver, CO 80202
303-534-5288
Fax: 303-534-5296

Help preserve Denver's unique heritage.
Become a Member of Historic Denver.

We care about your privacy and security on the Web. Click here to read our policies regarding your use of this Web site.

Historic Denver Guides
This series of books immerses readers in the rich history of Denver's buildings and neighborhoods, and gives them the tools to explore the city through entertaining walking tours.

The East 7th Avenue Historic District

Nancy Widmann

Photography by Cynthia S. Herrick

Explore the architecture and history of this beautiful, eclectic neighborhood.

ISBN 0-914248-11-1 $8.95

CASS-BLACKMER MANSION
975 EAST 7TH AVENUE
Architectural style: Colonial Revival
Built: 1908
Cost: $20,000
Architect: Unknown

The widow of Colorado Fuel & Iron's Alfred Curtis Cass, Mary Ashton Cass, built this red brick home. It was said to be the finest Colonial Revival in the West when it was built. The second owner was flamboyant attorney Henry Blackmer, who built the $5,000 wrought-iron fence and lavishly redecorated the interior. An alleged bootlegger, multimillionaire Blackmer was also suspected of other illegal business dealings.

Saco Deboer's landscape design included a reflecting pool, photographed ca. 1924. Photo: O. E. Lindevall, Denver Public Library, Western History Department.

TOP OF PAGE