Although there are no closely related other books, the Johnsons have written many novels which take place in the Rocky Mountain region. Finders Keepers (1981) and A Memory of Dragons (1986) are both set in the near future, with ecological damage and political turmoil complicating their plots. The latter novel also deals with a father-and-son relationship, but a more negative and tragic situation than in the story of Tristan and his father.