Ellis Island--Search for relatives that came through Ellis Island between 1892-1924.
Castle Garden--Search for relatives that came through New York 1820 through 1892, prior to the opening of Ellis Island.
Norwegian Heritage-- "Passenger Lists and Emigrant Ships"
FamilySearch--Run by the LDS church, this site makes the United States censuses and other informational lists searchable. One of the webdesigners found lost branches of her family in the U.S. from the 1880s.
Land Patent Search--Database search for land holdings/patents in the U.S.
Norway--List of Bygedlags from different regions in Norway. A Bygdelag is an group comprised of descendants of emigrants from Norway to North America.
Eastern Washington Genealogical Society Blog
Eastern Washington Genealogical Society(EWGS)--Local genealogy group
Washington State Genealogical Society
Washington State Digital Archives
Digitalarkivet--Searchable digital archives for Norway, contains searchable censuses, viewable parish books and other resources. One of the web designers has successfully found records of family in Norway using this resource.
The Norwegian Historical Data Center--Another place to look through census records, and parish registers. Good place to find ancestors in Bergen, not all regions are fully archived.
Sogn Og Fjordane Fylkeskommune--Searchable databases for Sogn og Fjordane. Go to the Databasetenester link on the left navigational menu. Then click on the English flag in the right hand corner if your Norwegian isn't as good as you'd like.
Norwegian Farm Names--Searchable databases for farm names in Norway.