my great great grandfather was funeralized at Powell & co in savannah,ga he was buried in laurel grove. Does powell & co still exist? if not where would i go to get this information?

Also another one of my great great grandmothers was buried in Mt Calvary cemetary in baltimore does that still exist she was funeralized by R.L. Parham or Parhan something like that does that still exist.

How can you find out where was the service held?
woudld these funeral homes that still exist keep copies of old programs of the deceased?

Also Savin& Savin funeral home in philly, i would like some information on. as well as mt lawn and eden cemetary in philly area.