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Portland Historic Landmark
The Ball–Ehrman House in 2012.
|Location||2040 SW Laurel Street
|Area||0.5 acres (0.20 ha)|
|Architect||Albert E. Doyle|
|Architectural style||English Cottage|
|NRHP Reference #||91000143|
|Added to NRHP||February 22, 1991|
- National Park Service (2009-03-13). "National Register Information System". National Register of Historic Places. National Park Service.
- Portland Historic Landmarks Commission (July 2010), Historic Landmarks -- Portland, Oregon (XLS), retrieved October 28, 2013.
- "Oregon National Register List" (PDF). Oregon Parks and Recreation Department. October 19, 2009. p. 30. Archived (PDF) from the original on 9 June 2011. Retrieved June 8, 2011.
- Kimberly Demuth and Sally Donovan (July 25, 1990). "National Register of Historic Places Inventory/Nomination: Ball–Ehrman House" (pdf). National Park Service.