"Find a Grave Index," database, FamilySearch (https://www.familysearch.org/ark:/61903/1:1:Q29B-JSG6 : 4 January 2024), Adolph W. T. Maretzky, ; Burial, Philadelphia, Philadelphia, Pennsylvania, United States of America, Mount Moriah Cemetery; citing record ID 150697458, Find a Grave, http://www.findagrave.com.
