Source Information
Ancestry.com. Canadian wild flowers: selections from the writings of Miss Helen M. Johnson of Magog, P.Q., Canada, with a sketch of her life [database on-line]. Provo, UT, USA: Ancestry.com Operations Inc, 2008.Original data: Helen Mar Johnson. Canadian wild flowers: selections from the writings of Miss Helen M. Johnson of Magog, P.Q., Canada, with a sketch of her life. Boston: J.M. Orrock, 1884.
