Pre Development (Planning and writing a GDD for a game I am hoping to develop)

This post I believe is my first one to this community! I am currently doing Research, drafting and hoping to acquire the artwork for a project tentatively named The Chronicles of An “Alaskan Fairy Tale” which is derived from an a now 40 year old wall mural (I am actually depicted in) of the same name which is “An Alaskan Fairy Tale”. I am excited about the prospects of this game which won’t only include the artwork of the mural (which is currently pending).

In terms of the 40 year old mural, the copyright owner surprises me a bit… If anyone has any thoughts or non legal suggestions unless there is or are lawyers in this community then hey! hopefully we can connect… If not, any other feedback is welcomed! I have approached a party which explained to me that the ownership is a government body! I know this means the possibility of major red tape, which will likely include royalties. I don’t have enough of my GDD ready but I figured I would at least start with a post and see where this goes.