The library at 6111 188th Place NE, Arlington, Washington, is open to the public and has a wide range of information and records. One room of the library is filled with Washington state and Snohomish County information and records, sorted by the county in the state or the community in the county, respectively. Another room contains records from every state in the US, including a large amount of Pennsylvania archive books because of one donor. The library also has access to ancestry.com.
The Stillaguamish Valley Genealogical Society web site may be found at http://stillygen.org, complete with a searchable online catalog of the library contents available. Information about the new library may be found in the North Country Outlook at http://goo.gl/ODRXtf.