Interior work on Memorial Amphitheater ended in June 1919. The remainder of the basement rooms and all of the second floor were now finished, too. All that remained to be done was decoration of the chapel ceiling, some interior and exterior inscriptions, and installation of lighting fixtures. The Corps of Engineers was also ready to connect the water and sewer lines, grade the grounds and roads, and install plantings and sod. During the next nine months, these items were all finished, and the interior painted. The masonry approaches were also completed, and the roadways and sidewalks paved. The G.B. Mullin Co. did the landscape design and work, which involved replanting 20 cedar trees around the three amphitheater entrances. The total cost of the structure and its grounds was $810,812. In total, of Mountain White marble from the Danby quarries of Vermont were used in its construction.