Viewing all Timeline Notes and Docs:
1. Open the TIMELINE NOTES & DOCS foldout by clicking on the Timeline label then click on the blue Notes and Docs button at the top of the EDIT Timeline foldout.
2. In the TIMELINE NOTES & DOCS foldout check the box to "Show all Notes and Docs".
Every note and document related to that Timeline's Events will now appear in the foldout.