Library systems and names

I noticed that in certain areas, whoever has been entering public libraries has been including the library system it's a part of, such as:

Free Library of Philadelphia - Independence Branch

East Baton Rouge Parish Library (Eden Park Branch)

I had already added many LA public libraries to Local before I noticed this, and have started doing it myself; I was wondering if this format had been agreed upon already, and I hadn't realized it, or is it just the preference of whoever is inputting?

I think it's fairly common.

Alrighty, I'll fix them.