She is of course Vita Sackville-West. And the pamphlet in question reproduces a poem first published by the Hogarth Press in 1931. The poem is called "Sissinghurst" and is dedicated to Virginia Woolf.
It opens
A tired swimmer in the waves of timeTime travel by near drowning.
I throw my hands up: let the surface close:
Sink down through centuries to another clime,
And buried find the castle and the rose.
And so for day 1447
29.11.2010