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Dyke, A. S.; Prest, V. K. (1987). "Late Wisconsinan and Holocene History of the Laurentide Ice Sheet". Géographie Physique et Quaternaire. 41 (2): 237–263. doi:10.7202/032681ar.
Martin Margold; Krister N. Jansson; Johan Kleman; Arjen P. Stroeven; John J. Clague (18 February 2013). "Retreat pattern of the Cordilleran Ice Sheet in central British Columbia at the end of the last glaciation reconstructed from glacial meltwater landforms". Boreas. 42 (4). Wiley Online Library: 830–847. doi:10.1111/bor.12007.
Late Wisconsinan and Holocene History of the Laurentide Ice Sheet, 10.7202/032681ar; Arthur S. Dyke, Victor K. Prest; Geological Survey of Canada; Ottawa, Ontario; 1987; http://id.erudit.org/iderudit/032681ar.
William J. Broad (5 June 2018). "How the Ice Age Shaped New York". The New York Times. Retrieved 24 February 2019. the ice was about 2,000 feet thick over Manhattan