Many of Penelope Fitzgerald’s surviving papers are collected at The Harry Ransom Center at the University of Texas, Austin.
Here’s a quick summary description of their Literature collection:
Manuscripts, annotated typescripts, corrected proofs and galleys, notes, correspondence, diaries, and volumes from the personal libraries of many of the most important twentieth-century authors of North America, Great Britain, and France are the Ransom Center’s special strength. In addition, printed volumes in first and subsequent editions, as well as variants, translations, abridgements, adaptations, and bibliographical, biographical, and critical works provide a basis for the study of most of the Center’s original materials.
Access the Literature collection here. See the complete list of Penelope Fitzgerald holdings here.