Is it possible to search the online library catalog by publisher?
Use the Advanced Search to limit searches by publisher.
Here is the path:
Go to the library website at lib.byu.edu
Click the grey down arrow in the search box at the top of the home page
Type the name of the publisher in one of the "Any Field" search boxes
Include additional information in other boxes if you are looking for a particular author, publication date, etc.
Click the blue "Search" button
The results list includes the publisher highlighted in bold print.