Q. How do I know if BYU has a Family History Library film?

If you don't have the Family History Library film number, find it in the Family History Library online catalog. 

https://www.familysearch.org/search/catalog

Link to the BYU Family History Library film finder and type the film number in the search box. 

http://lib.byu.edu/cgi-bin/FHL/FamilyHistoryFilms.pl

For more resources, visit https://guides.lib.byu.edu/familyhistory