[ChuckMcM]

That is a very good point, if the author knew that there was a demand for mysterious documents they may have created one to fill that demand.

[codezero]

Tis is very likely. I bought a map of the US for my dad (he collects old maps) which depicts California as an island some 10-15 years after they were sure it wasn't an island. It turns out that novelty maps were more in demand than real maps.