Describing IPH (a lay Institute of Preparation for the Hereafter) in Canto Three of his poem, John Shade (the poet in VN's novel Pale Fire, 1962) says that IPH was a larvorium and a violet:
L'if, lifeless tree! Your great Maybe, Rabelais:
The grand potato. I.P.H., a lay
Institute (I) of Preparation (P)
For the Hereafter (H), or If, as we
Called it - big if! - engaged me for one term