The Master Surname Database (not online) (mostly burials in Alberta cemeteries) of the Alberta Genealogical Society lists these names;
Anton PETERSEN, 1890 - 15 Sep 1976
Thomas PETERSEN, 1884 - 1966
both burials in different areas of the Camrose cemetery.
No other PETERSEN in this cemetery.
For further research please contact the Research Committee
of the Edmonton Branch.http://abgensoc.ca/
The Edmonton Branchhttp://www.agsedm.edmonton.ab.ca/