The Library of William Morris: A Catologue:
The Thomas Jefferson Library at the Library of Congress:
Similar to the efforts of Reading with Austen and the search for books in the Godmersham Park Library, the website Frances Wolfreston Hor Bouks seeks to find all the works owned by this gentrywoman from the English Midlands: https://franceswolfrestonhorbouks.com/
The Stainforth Library of Women’s Writing:
A study of the largest private library of Anglophone women’s writing collected in the nineteenth century – the library of Francis John Stainforth (1797-1866), an Anglican clergyman. His library catalog (online at the University of Colorado, Boulder) lists 7,726 editions (8,804 volumes) authored and edited by 3,721 writers, nearly all of whom are women.
You can visit LibraryThing for their Legacy Libraries collection where they have nearly 2000 libraries of historical figures catalogued:
Legacy Libraries are the libraries of historical people (as well as a few institutions), entered into LibraryThing by dedicated members working from a variety of sources, including published bibliographies, auction catalogs, library holdings, manuscript lists, wills and probate inventories, and personal inspection of extant copies.
I will list and link to those of people with some connection to Jane Austen:
1. Samuel Johnson (841 books): https://www.librarything.com/legacylibraries/profile/SamuelJohnsonLibrary
2. Sir Walter Scott (4027+ – in progress): https://www.librarything.com/legacylibraries/profile/WalterScottLibrary
The 1st editions of Austen’s Emma and Northanger Abbey / Persuasion are listed.