According to Anne Stevenson*, Sylvia Plath's biographer, Plath visited her father's grave in Winthrop cemetery for the first time in March 1959. According to Stevenson, the notes Plath made at that time inform her description of Esther Greenwood's search for her father's grave in The Bell Jar.
Shortly after her visit to the grave in 1959, Plath wrote a poem referring to the event, entitled Electra on Azalea Path:
The day I woke, I woke on Churchyard Hill.
I found your name, I found your bones and all
Enlisted in a cramped necropolis,
Your speckled stone askew by an iron fence.
*Bitter Fame p.152