Ted:

Joy was a graduate of Smith College, in Massachusetts, and before she died we made arrangements to give her correspondence with me, and a lot of her other personal papers, to the Sophia Smith Collection, a part of Smith College's library that collects materials recording the lives of women. Joy was a fairly remarkable person, so its possible that the Sophia Smith Collection might have her diaries.

Holly:

a representative said it is not available to the public.

Finally, here's the website for the archive: The Sophia Smith Collection of Women's History