I did a search and found the following page from Beeville, Texas for Cemetery Associations. There is a listing for Hill Top Cemetery with two contacts and phone numbers. You might give those phone numbers a try. Also, if you call the McMullen County clerk and ask about the Hill Top Cemetery association they may also be able to tell you who to get in contact with that has a list of burials.
http://www.beeville.net/Cemetery/Cemetery_Associations.htmRenee Smelley
IRSmelley2@aol.com