The Japan Times has announced the existence of 6 aerial pictures of Tokyo before the Great Kanto Earthquake of 1923. These were found in the collection of an anonymous private collector (I have no idea why they have only just been publicized) and were taken by pilots of the Ito Hikoki Kenkyujo (Ito Airplane Research Institute).
Unfortunately, only one of them has been released to the public so far. The picture at the top shows the central city area around Tokyo Station on April 12, 1922. The bottom picture shows the same view today.