In a Nebraska State Journal piece on artists' private lives, Cather writes, "It is better that we do not know what the last chapter of the Pere Goriot cost Balzac, what the third chapter [act?] of Phaedra cost Rachel."
In Collected Short Fiction 1892-1912, the roomers speculate about Count de Koch as the roomers do about Balzac's Goriot in "The Count of Crow's Nest."