There are many resources online and in books to help interpret grave site symbols, including this in-depth one that lists symbols alphabetically. My "In the Arms of Angels" book's chapter 5 "Cemetery Symbology" samples symbols found at Magnolia Cemetery. And our "Stories Told in Stone" text includes a "Glossary of Common Gravestone Symbols & Interpretations" chapter (pages 71-82).
|Listing in Sharon Carmack's "Your Guide To Cemetery Research"|
This Prezi includes an extensive online piece on such symbols and their meanings.
This Prezi can also be viewed by clicking here.