I decided to use a tag for my recent run of "advent director's commentary", so I could make a permanent link to the assembled posts. Problem was that the posts are then in reverse chronological order, and would make for backwards reading.
Yet Another Bloggers Tips Blog to the rescue! That link has a script I was able to copy and paste into my template here, and then I could construct the following link:
Cool! I should go back and figure if I have any other series to permalink using it.