Here is the the image Frank H. sent us, reproduced in the highest quality we could manage. Let us know by e-mail if you have any information or opinions about this image.
The Adventures of Tintin at Sea includes a discussion of Haddock Island, pointing out that in Red Rackham’s Treasure, Tintin suggests that Sir Francis used a French chart. That would place Haddock Island farther to the east, at
20 37 42 N
68 32 01 W.
That may indicate that Frank H.’s map is a fraud!
Above: Frank H.’s map
Below left: detail from The Adventures of Tintin at Sea showing the corrected location.
Below right: The corrected location of Haddock Island using Google Earth.
To experiment with your own maps, try the following.