In late 1927, preliminary drawings of the individual Triangle buildings were incorporated into a formal presentation of the entire project. The drawings became the basis for a three-dimensional scale model that was publicly unveiled in April 1929. The next month, after examining the model, the Commission of Fine Arts was highly critical of Simon's design for an archives. Commissioners suggested that the noted architect John Russell Pope be added to the Board of Architectural Consultants and that he design the National Archives. Pope was asked to join when the death of a board member created a vacancy.