Kolodny, Annette (2007). "Rethinking the 'Ecological Indian': A Penobscot Precursor". Interdisciplinary Studies in Literature and Environment. 14 (1): 1–23. doi:10.1093/isle/14.1.1. JSTOR44086555.
Kucich, John J. (2011). "Lost in the Maine Woods: Henry David Thoreau, Joseph Nicolar, and the Penobscot World". The Concord Saunterer. 19/20: 22–52. JSTOR23395210.
Kolodny, Annette (2007). "Rethinking the 'Ecological Indian': A Penobscot Precursor". Interdisciplinary Studies in Literature and Environment. 14 (1): 1–23. doi:10.1093/isle/14.1.1. JSTOR44086555.
ncai.org
"Tribal Directory". National Congress of American Indians. Retrieved 30 August 2012.