The Beinecke Library at Yale University, New Haven, Connecticut, has some archival Sylvia Plath materials. They hold manuscript poems for Plath's "Hear the crickets chirping...:" and "I saw a little birdie...". From the record, both are dated 16 May 1941.Both poem manuscripts have scansion marks and feet; annotated by Aurelia Plath, on verso of Boston University stationery. Written by the author when she was 8 years old, these irresistible juvenilia artifacts complement other items in the collection of Betsy Beinecke Shirley.
The Beinecke acquired the manuscripts in 2003, however, I found no other information about them.
Click here to read the acquisition information about these items.
The homepage for the Beinecke is here.