The vast majority of the drawings (including blue and light prints) were probably sent to Cuypers for review, dated 1903, 1906, 1913.
In addition, a presentation drawing of a bay of the front facade (with sculptures) was found, signed by P.J.H. Cuypers, bearing a stamp of *P.J.H. Cuypers archive* with negative number 547 and a drawing of the balustrade on a facade, bearing a Cuypers & Co number 4289 and blueprints of the sketches for the sculptures, bearing stamps of Cuypers & Co.