-1962 Loading Limits Report at the Washington Monument
-1993 Evaluation of the Washington Monument
-1998 Geotechnical Investigation at the Washington Monument
-2002 Subsurface Investigation at the Washington Monument
-2009 Cultural Resource Inventory
NOTE: Many of the primary documentation related to the historic resources within the project area is currently available at: http://www.nps.gov/nationalmallplan/History.html
Additional documentation (such as the Washington Monument Historic Structure Report) are available at: http://www.nps.gov/history/history/park_histories/index.htm
Links within the above document(s) were valid as of the date published.
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