Listing posts of a selected category on sidebar

I’ve been rooting around the codex and in here and elsewhere trying to find a solution and I haven’t been able to find it. I know this can be done in MT so it should be able to be done in WP:

I would like to display a list of entries for one particular category on the sidebar, like this:

Category Name
An entry
Another entry
Yet another entry

But only for a certain category. I’ve studied the codex on using the category tags, but it looks like these just provide a link to a page that displays the stated category(ies), I haven’t seen where it would actually drop the list in there. I also looked around under archives, but didn’t have any luck there either. It’s no big deal if I can’t do it, but it would have been nice. Thanks for any help.

Joni

P.S. I’m redoing my car club’s web site, and I’m using an old domain. If you want to take a look at what I have so far, go here:

https://adaugeo.org

P.P.S. I have modified Patricia Muller’s lovely connections theme so that it looks fairly similar to what we have now (https://zcar.org). I will give her kudos in the to-be-created colophon. Do let me know if this is bad form or if there is a better way to indicate I’ve modded her stylesheet.