This is unfortunate. You’ve been directed to a page that doesn’t seem to be here.
The site is an archive and virtually all pieces are here permanently. I do occasionally have a clear-out and delete pages, though these are almost always reviews of books that have gone out of print.
However, I am currently redesigning the site to make it less time-consuming for me to maintain. Though this isn't yet obvious, changes are progressively being introduced. One is that I have removed the plain text of newsletters, keeping only the HTML-formatted one, and retain only the past year’s issues.
If, outside these changes, the link you followed was from another page on this site, I do apologise and ask that you take a moment to tell me about it so that I can correct the fault. If the link was on a page on another site, I’d like to be given details of the referring page so that I can try to sort the matter out.
To find what you’re looking for, try checking through the menus at left, exploring the complete index, or using the search function on every page.