Baker, Frank C. (1891). „Special Laws”. The Laws of Oregon, and the Resolutions and Memorials of the Sixteenth Regular Session of the Legislative Assembly Thereof. Salem, Oregon: State Printer: 770.
„Interactive display of crime and arrest data for the State of Oregon”. Oregon Crime Data. Oregon Criminal Justice Commission. Архивирано из оригинала 28. 1. 2010. г. Приступљено 30. 1. 2009. To view the Washington County statistics, select "Washington County" on the first interactive screen and "Summary Rates" on the second screen. For ease of comparison, rates given as crimes per 10,000 have been converted to crimes per 100,000 by multiplying by 10.
„Interactive display of crime and arrest data for the State of Oregon”. Oregon Crime Data. Oregon Criminal Justice Commission. Архивирано из оригинала 28. 1. 2010. г. Приступљено 30. 1. 2009. To view the Washington County statistics, select "Washington County" on the first interactive screen and "Summary Rates" on the second screen. For ease of comparison, rates given as crimes per 10,000 have been converted to crimes per 100,000 by multiplying by 10.