Bowles, K., Le, J., & Moring, J.R. (1999). Fishes and Other Aquatic Resources of Acadia National Park: A Synopsis of Published and Unpublished Information. Retrieved from http://irmafiles.nps.gov/reference/holding/453066
Cornell Lab of Ornithology (2015). eBird: Acadia NP--Witch Hole Pond Carriage Path Loop. Retrieved from http://ebird.org/ebird/hotspot/L1155999
Fischer, J.M., & K.E. Yoder (2015). Lakes and Ponds. Biology Reference. Retrieved from
http://www.biologyreference.com/La-Ma/Lakes-and-Ponds.html
Hazam, B. W. (1992). An Investigation of the Bats of Mount Desert Island. [College of the Atlantic thesis] Retrieved from https://irma.nps.gov/App/Reference/Profile/2179869
Jacobi, C. (2001). Monitoring Carrying Capacity on Acadia National Park Carriage Roads: 2000: Crowding and Behaviors. Retrieved from https://irma.nps.gov/App/Reference/Profile/2179233
Jacobi, C. (2005). Monitoring Visitor Capacity: Acadia National Park Carriage Roads, 2003: Crowding and Behaviors. Retrieved from https://irma.nps.gov/App/Reference/Profile/2179428
Gilman, R.A., C.A. Chapman, T.V. Lowell, & H.W. Borns, Jr. (1988). The Geology of Mount Desert Island: A Visitor’s Guide to the Geology of Acadia National Park. Retrieved from
http://www.maine.gov/dacf/mgs/explore/bedrock/acadia/B-38.pdf
Maine Department of Inland Fish and Wildlife (1983). Witchhole Pond. Retrieved from
http://www.state.me.us/ifw/fishing/lakesurvey_maps/hancock/witchhole_pond.pdf
Maine Geological Survey (1988). [Color map classifying and identifying the bedrock geology of Mount Desert Island] Bedrock Geology of Mount Desert Island. Retrieved from
http://www.coa.edu/shall/Maps_and_Links_files/GeologyMDI.pdf
National Park Service (2015). Park visitation and climate change: Project brief. Retrieved from http://www.nps.gov/subjects/climatechange/upload/NPS_visitation_climate_brief.pdf
National Park Service (2010). Acadia National Park: Geologic Resources Inventory Report. Retrieved from https://www.nature.nps.gov/geology/inventory/publications/reports/acad_gri_rpt_view.pdf
National Park Service (n.d.). A Guide's Guide to Acadia National Park. Retrieved from
http://www.nps.gov/acad/upload/Guide-s-Guide-3-856-KB-2.pdf
National Park Service (n.d.). The History of Acadia National Park and Mount Desert Island. Retrieved from
http://www.nps.gov/acad/planyourvisit/upload/history.pdf
National Park Service (n. d.). Carriage road: User’s Map. Acadia National Park. n.p.
Newlin, W.V.P., K.S. Cline, R. Briggs, A.A. Namnoum, & B. Ciccotelli (2013). The College of the Atlantic Guide to the Lakes and Ponds of Mt. Desert. North Atlantic Press: Berkeley, CA.