I didn't see this exact scenario anywhere in forum...
Here is client's request:
1 Bottom of home page, put link to "additional articles"
2 "More Info" page has links to 25-50 more pages of new content
3 At bottom of each new content page add link to existing page (of related content) already on site
So the question is, is there any SEO benefit (or potential harm) for linking related "old" content page on bottom of "new" content page, all within same website?