In Canto Three of his poem John Shade (the poet in VN’s novel Pale Fire, 1962) describes his heart attack (during which he saw a tall white fountain) and mentions Captain Schmidt and Captain Smith:
If on some nameless island Captain Schmidt
Sees a new animal and captures it,
And if, a little later, Captain Smith
Brings back a skin, that island is no myth. (ll. 759-762)