[foo92691]

"Copyright © 1978-2021 Berkshire Hathaway Inc."

Ok the web page looks old but maybe not that old

[zeckalpha]

A subset of the content could be that old.

[eesmith]

The oldest I found was from 1977 - https://www.berkshirehathaway.com/letters/1977.html .

Here's the 'Chairman's Letters To The Shareholders (Historical Compilation)' from the 1997 version of their site - https://web.archive.org/web/19970530212045/http://www.berksh... , with yearly publication.

[lukeh]

Could be auto-generated.