 In the last video, we talked about the concept of maintaining your authority file and making sure it's up-to-date. And as you can see, this does take a fair amount of time and effort at the time of part of library staff. So some libraries have chosen to outsource these tasks. There are a number of vendors who do authority work, meaning you're monitoring changes in things like name authority hangings and subject headings, and they will send you a new batch of authority records when these changes take place. Markhive is one of them. Library Technologies, Inc. You may call them abbreviated LTI. And Backstage Library Works. Those are three of the most prominent. There are many others, so I would not consider this an exhaustive list, but these are some places to start with if you're thinking of having this done. I definitely recommend talking to other people at other libraries and seeing who they recommend, what their experiences are. And so when others are doing that, if you're not at that point yet deciding on a vendor, you're just trying to decide, should you outsource? There's the pros and cons. Nothing will work for every library exactly the same. The advantage is that it saves yourself time, and you'll probably have a cleaner database because this is what they do. They're not stretched thin between other duties. The disadvantage is that it does cost money, and you would have to talk to the individual vendors about how much it costs. And you can have some errors if their one size fits all, hey, an authority of record change may not necessarily mesh totally with local practices in your catalog. That's just something to look out for. So though there's some pros and cons of the decision to outsource your authority.