I wonder where the historical Corona Virus research papers can be downloaded. Probably a bulk download of all papers from a couple of years or decades.
You can also search the Entrez Portal of NCBI. See Entrez Programming Utilities Help.
A query to get publication metadata for papers from 1995 that have "Coronavirus" in their title: https://eutils.ncbi.nlm.nih.gov/entrez/eutils/esearch.fcgi?db=pubmed&term=coronavirus[title]%20AND%201995[pdat]
This query does not give you the full text of these papers, only basic metadata about the results, and the first 20 ids of papers found.
It would be your task then to follow up on each paper ID (get more info from Entrez, fetch the PDF etc). I haven't done so here because you have already answered your own question, sufficiently.