In my 1987 paper, "A Pious Fraud: The Indian Claims for pre-Jennerian Smallpox Vaccination" I traced all claims for pre-Jennerian smallpox vaccination to a single newspaper report that appeared in the Madras Courier for 12 January 1819. I have now uploaded scans of this issue of the Madras Courier to archive.org: for posterity. The images at archive.org are large enough to read properly.
|The claim for pre-Jennerian vaccination in a Sakteya Grantham (see first two columns)|
The above image is too small to read, but you can read this one from archive.org.