Kennebec Arsenal, Additional Documentation: Old Max, Augusta, 1905
The Kennebec Arsenal Historic District was listed in the National Register of Historic Places on August 25, 1970 in recognition of the site's military and industrial significance. The property was further recognized as a National Historic Landmark on February 16, 2000. Both listings concentrated on the 19th century function of the property as an military outpost. The intention of the recently approved additional documentation was to expand the period of significance and area of significance to reflect the importance of the 20th century use of this property.