Shortly before Carson's death, she and Freeman destroyed hundreds of letters. The surviving correspondence were published in 1995 as "Always, Rachel: The Letters of Rachel Carson and Dorothy Freeman, 1952–1964: An Intimate Portrait of a Remarkable Friendship", edited by Martha Freeman, Dorothy's granddaughter, who wrote at publication: "A few comments in early letters indicate that Rachel and Dorothy were initially cautious about the romantic tone and terminology of their correspondence. I believe this caution prompted their destruction of some letters within the first two years of their friendship..." According to one reviewer, the pair "fit Carolyn Heilbrun's characterization of a strong female friendship, where what matters is 'not whether friends are homosexual or heterosexual, lovers or not, but whether they share the wonderful energy of work in the public sphere'."