Between November 2009 and February 2010, Materials Conservation Co., LLC implemented treatments on the interior northwest and southeast domes and north lobby of the U.S. Treasury Building in Washington, DC. The project scope included analysis of decorative finishes, plaster repairs, and recreation of finish schemes.

The U.S. Treasury Building was constructed in phases between 1836 and 1869. Various architects contributed to the design, including Robert Mills, designer of the Washington Monument. The Treasury was declared a National Historic Landmark in 1972.

Prior to implementation of treatments, an analysis was performed on the domes and entablatures to determine the historic painting campaigns. Once a history of the multiple campaigns of paint and gilding was established, both finishes were matched and replicated by Materials Conservation to represent a selected period of significance. All work was performed in collaboration with the Conservator/Associate Curator for the Department of the Treasury.