Gold Run is a book that comes highly recommended as well-researched about this topic. Criticisms of the book include that it needs an editor and that it sometimes wanders from the story about the gold to general life in Norway in 1940. In order to write a research paper about this topic, I would need to get this book.
Snow Treasure is a fictionalized account of the smuggling of Norway's gold. It appears that this was written more as a propaganda book and that there actually was no gold smuggled by children on sleds. It is a fun book to read and it led me to research the actual truth of Norway's smuggled gold, so it may be worth your time to read, but it is not a good resource for facts about the smuggling.
This looks like a great book! It is somewhat fictionalized, but based on more fact than Snow Treasure.
On April 29, 1940 the HMS Glasgow transported Norway's king, crown prince, and a large quantity of gold. I appears that this is well-documented. This website is based on a very expensive book.
This is a history of the HMS Glasgow. It corroborated the information about the evacuation of King Haakon of Norway and his crown prince along with a quantity of gold boullion. They went from Molde to Tromso on April 29-30, 1940.
The M/S Bomma was possibly used to transport Norway's gold to Baltimore. More research would be necessary to confirm this.
Reportedly the June 28 trip into Baltimore was the voyage that brought the gold to the USA. More research is necessary. It appears from this voyage list that the Bomma was in Scotland before leaving for Massachusetts.
This article from the Baltimore Sun tells that the gold was taken to New York rather than Baltimore, but then goes on to tell of a mysterious gold shipment to Baltimore and the inspiration for the book Snow Treasure. I am not sure what to make of this. More research is needed.
Vintage digitized newspaper story about the gold being taken from Norway. Cairns Post (Qld. : 1909 - 1954) Fri 22 Aug 1941
Interesting conversation with many many leads if I wanted to do more research.