The DEW line was a set of early warning radar sites built in the Arctic by USA in the 1950s.
Information on the sites is available from: http://www.lswilson.ca/dewline.htm
A comprehensive bibliography is available at: http://pubs.aina.ucalgary.ca/aina/dewlinebib.pdf – a 125 page list of documents and reference material from the Arctic Institute of North America (October 2005).
Another comprehensive, annotated bibliography is at: https://jukebox.uaf.edu/site7/sites/default/files/DEW_ANNOTATED_BIBLIOGRAPHY.pdf prepared for United States Airforce 611th Civil Engineer Department (September 2008)
