Diamond Block
The Diamond Block is located at 40-52 West 6th Avenue. The Diamond Block was built in 1889 and designed by James R. Stranahan. T. C. Power commissioned the building. (Photo)
Sources at the Lewis & Clark Public Library
- Paladin, Vivian A. Helena: An Illustrated History. Helena, Montana: Montana Historical Society Press, 1983. 73, 206, 220.
- Baucus, Jean. Gold in the Gulch. Helena, Montana: Bar-Wineglass Pub. Co., 1981. 52.
- Campbell, William C. From the Quarries of Last Chance Gulch. Vol. 2. Helena, Montana: Bell-Arm Corp., 1964. 284.
- Robinson, Willard B. "Helena's Fabulous Business Blocks." Montana the Magazine of Western History. 18 (1): 56,57ff. [Shelfmark Helena Winter 1968 V18 N1]
- Jiusto, Chere. The Heart of Helena: a Historical Tour. Helena, MT: City of Helena, 1989. 13. [Shelfmark M 978.66 J]
- New Sparkle for a Rare Jewel. The Independent Record 13 October 1974, 21-22.
Sources at the Montana Historical Society
Research Center
- Helena, Montana - Buildings. Vertical File.
- Paladin, Vivian A. Helena: An Illustrated History. Helena, Mont.: Montana Historical Society Press. 1983. 73, 206, 220.
- Baucus, Jean. Gold in the Gulch. Helena, Montana: Bar-Wineglass Pub. Co., 1981. 52.
- Helena (Mont.). Board of Trade. Helena, Illustrated, Capital of the State of Montana. Minneapolis: Frank L. Thresher, Publisher, 1890. 29, 66.
- Ide, Arthur W. and W. D. Rumsey. Helena, Montana: Its Past, Present and Future. Helena, Montana: Arthur W. Ide and W. D. Rumsey, 1891. 81.
- Schulz, James G. The Geology of the Architecture of Historical Buildings in Helena, Montana. Thesis (M.S.), Northern Arizona University, 1998. 71-72.
- Campbell, William C. From the Quarries of Last Chance Gulch. Helena, Montana: Montana Record Pub. Co., 1951-1964. Vol. II, 284.
- New Sparkle for a Rare Jewel. The Independent Record 13 October 1974, 21-22.
- Robinson, Willard B. "Helena's Fabulous Business Blocks." Montana: The Magazine of Westren History. 18:1 (Winter 1968): 44-59.
State Historic Preservation Office
- "Diamond Block Inventory Form." Helena Historic District National Register Files. (Photo)
- "Shaffer, Fisk J." Architects Biographical Files.
- "Stranahan, James F." Architects Biographical Files.
Online Resources
- Helena, Montana. Board of Trade. Helena, Illustrated, Capital of the State of Montana. Minneapolis, Minn.: Frank L. Thresher, Publisher, 1890. 29, 66.
- New Sparkle for a Rare Jewel. The Independent Record 13 October 1974, 21-22.