For all those that are still searching, I have been assured that if you submit your request to the below person, you will receive location data on your loved one. Mine you, they will still not go out and clean the lot for you though.
Contact Ms. Dorothy Johnson -410-669-7974- Request in writing to Ms. Johnson at the Grave Research Department, Mt. Auburn Cemetery-1206 Ettings Street, Baltimore, Maryland 21217

The person that is currently assigned to oversee the perpetual care of the cemetery is the Rev. Doug Sands 410-547-0337 at Sharp Street Church.

And the struggle goes on...