In 'Scarlet Street' magazine (#28), published in 1998, there is a lengthy article about Keye Luke. I found the following statement in that article from Keye Luke himself to be of interest regarding the legendary "three Charlie Chan films that weren't" that Monogram Pictures was planning to shoot in Europe after the release of "The Sky Dragon":
"Actually, there were plans to make three more Chans later. A firm in England had some 'frozen money' they were willing to use to finance the pictures. We were going to do the interiors in London and then travel to Rome, Paris, and Monte Carlo and shoot locations for the three mysteries. I was in New York in March 1950 waiting to go over, and I received a telegram stating: 'His Majesty's government has just devalued the pound. So sorry, no more Charlie Chan stories.' Hence, after 47 films, the series finally came to an end."
