I was thinking A Red & Pleasant Land* is not just a book. It is an artefact.
And then I heard a click, a shuffle of pages, and there it is: the gate to Voivodja!
The gate to Voivodja is the book itself.
After all, you can put a book wherever you want.
If you want your players to go to Voivodja, you simply put the A Red & Pleasant...