The supervising architect for both the original construction and a substantial extension completed in 1933 was James A. Wetmore.

Built in the Classical Revival style, the building has been described as "the postal beauty of the southwest… a marble, bronze and granite memorial to its builders".

[1] The post office and courts relocated to the Page Belcher Federal Building, after it was completed.

The former post office building was remodeled, then occupied by the Army Corps of Engineers in the mid 1960s.

[3] It was listed on the National Register of Historic Places on March 24, 2000, as United States Post Office and Courthouse.