I think my first suggestion would be https://highlighter.com/.
This would enable you to go back through your history of articles and posts, and bring them all into Nostr.

Another option would be to generate PDF versions of each of the articles, and then share them to IPFS via IPFS Desktop. Then you would be able to provide links to each article, and you can be guaranteed that they will always be the original PDF versions that you posted. 

 Gonna check this out tomorrow.