There is/was a back entrance to Laurel Land for African American Funerals from back in the day. The earliest plots I thought were to the left of the Marsalis Entrance & would be East of Stevie Ray Vaughn's Family Estate.
Any family names, dates of birth, & spouse information give to the person in charge in the building right of the florist. He/she will provide a map with Section Name & Lot number. The staff will ask/try for your personal services. That is their sale job. Have an answer ready you will need it.
Find A Grave is a website you can access (once you register). Follow the prompts, & this site will show you a photo of marker. You can find anyone in any state. There is a section on the persons page where you can tie other family members to each other.
Example: Mary Jane Smith spouse John David Smith are deceased. You can add brothers, sisters, parents etc. to each persons page. List name & relationship of each.
****Note to self, start with a fresh notebook. You will find more people than you know & others needing to be added. You loose track quickly of what family member you have added.
If you know someone is @ any cemetery & no photo or info shows up, only means the volunteer has not covered the section of property.
Good Luck