References
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- McMahon , Bernard . 1806 . The American Garden Calendar , Philadelphia : B. Graves .
- Kirtland , Jared P. 1850 . The Family Visitor , I ( 4 ) 4 January : 29 – 29 .
- Collyer , R. H. md . 1838 . Manual of Phrenology , 82 – 82 . Cincinnati : Alexander Flash .
- Cobbett , William . 1821 . American Gardener , London : C. Clement .
- McMahon , Bernard . 1976 . American Gardener , 99 – 100 . New York : Funk & Wagnalls . Reprint
- Kirtland , Jared P. 1850 . The Family Visitor , I ( 17 ) 16 May
- Kirtland , Jared P. 1850 . The Family Visitor , I ( 5 ) 31 January