Portland (Or.)Portland (Or.). Bureau of Planning2008-03-142008-03-141987-08http://www.portlandonline.com/planning/index.cfm?a=58873&c=34250https://hdl.handle.net/1794/57529 pp. Bookmarks supplied by UO. Published August, 1987. Captured March 13, 2008.[T]he Yamhill Historic District is a unique asset to Portland and has been recognized nationally by its placement on the National Register of Historic Places. There are certain procedures and regulations the City has adopted for the protection and enhancement of the Yamhill Historic District. [From the document]316425 bytesapplication/pdfen-USCity planning -- Oregon -- PortlandCommunity development -- Oregon -- PortlandNeighborhood planning -- Oregon -- PortlandHistoric districts -- Conservation and restoration -- Oregon -- PortlandYamhill Historic District (Portland, Or.)Book