COLLECTED BY
Collection: Fed Site Closures 2011
This crawl was performed in Fall of 2011 to archive Federal government web sites that were either slated for removal or for merger with other online resources.
TIMESTAMPS
The Wayback Machine - https://web.archive.org/web/20111020045514/http://www.census.gov/acs/www/Downloads/survey_methodology/Chapter_4_RevisedDec2010.pdf