Here is a link to the Bodleian Library’s Centre for the Study of the Book project of conserving Jane Austen’s Volume the First, her Juvenilia compilation that includes Henry & Eliza, The Adventures of Mr Harley, and The beautifull Cassandra. “Austen wrote in a ready-made bound blank-book and completed the transcript when she was seventeen. The manuscript was bought for the Bodleian Library through the Friends of the Bodleian in 1933 and was first published in an edition by R. W. Chapman (Oxford, 1933).” [from the Bodleian website]
see the Bodleian Library Centre for the Study of the Book for more information and photographs.
[Volume the First, before conservation, from Bodleian website]