Hi Frank,
This is done. Now table of content links are displayed as related resources as categorized blocks of links. Please check the above links or a few more here 
https://dev.miusa.org/resource/books-and-journals/awayyouth
https://dev.miusa.org/resource/tip-sheets/flex-and-yes-resources

Related resources will come only for those resources where the related table of content exists. You can add a table of contents to any resources by editing the table of contents ACF field and clicking on add row.
