Anyone know who wrote the poem in, the film "Into the Wild?"?

It's 16 minutes into the film. The poem comes from the perspective of an unborn child. It's about the child's warning to his parents about the damages that would result from there marriage. Great poem about divorce.
Anyone know who wrote the poem in, the film "Into the Wild?"?
'I Go Back to May 1937' by Sharon Olds.





Read it here:


http://www.english.uiuc.edu/maps/poets/m...