When the royal family returns to their home in Norway, Prince Olav shows Märtha her new office (with the new desk). She picks up a framed photo that is set next to her Grand Cross by the Order of St. Olav sash - this is an actual historical photo of FDR sitting next to Princess Märtha at the Washington Navy Yards, during the handing over ceremony of Norway's new submarine fighting ship (Eleanor Roosevelt is also seen in the background of this photo).
The movie camera the princess uses on the boat seems to be the Agfa Movex 8 Movie Camera, 8-mm, The First Single-8 Camera To Use Film In A Cartridge, Made In Germany, Circa 1937.