The community was named for Dorothy Wilson, a young girl that lived in the area at the time the post office opened.
Dorothy is home to two former churches, a United Church that was in service between 1932 and 1961, and Our Lady of Perpetual Help Roman Catholic Church that was in service between 1944 and 1967. They hosted numerous social events for the area.
- Alberta Municipal Affairs (2010-04-01). "Specialized and Rural Municipalities and Their Communities" (PDF). Retrieved 2010-07-11.
- Statistics Canada (2010-03-05). "Standard Geographical Classification 2006 – Special Area No. 2, geographical codes and localities, 2006". Retrieved 2010-07-11.
- Place-names of Alberta. Ottawa: Geographic Board of Canada. 1928. p. 43.
- "Simon Wroot's Studio". Archived from the original on 2013-04-10. Retrieved 2013-03-27.
- "Ghost Towns of Alberta". Retrieved 2013-03-11.
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