GH2 has worked closely with the United States Postal Service to facilitate the upgrade and repair of the original historic windows at the United States Federal Building in Ponca City, Oklahoma. In 2006, the project goal was to retain and repair the original windows and decorative surrounds. This option was only feasible for a select number of original units.
In 2012, GH2 again worked with USPS to develop an additional alternative that would meet more strict budgetary requirements while being sensitive to the original design of the windows and openings. The new design replaces deteriorated windows with new aluminum frame, insulated double pane window systems. The new windows will match the frame profile and original color of the historic units and will provide upgraded thermal properties. GH2 worked closely with local preservation groups and the State of Oklahoma Historic Preservation Office (SHPO) on approvals for the project.