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49. : Glacial origin of older Pleistocene in Gay Had cliffs, etcetera. 



Bulletin of the Geological Society of America, volume 11. 1900, pages 

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50. : Note on the elevated beaches of Cape Ann. Bulletin of the 



Museum of Comparative Zoology, volume 42, 1903, pages 191-194. 



51. : Some typical eskers of southern New England. Proceedings of 



the Boston Society of Natural History, volume 26, 1894, pages 197-220. 



52. : The ice-contact in the classification of glacial deposits. American 



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53. F. P. Gulliver : The Newtonville sandplain. Journal of Geology, volume 



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54. : Ice-sheet on Newtonville sandplain. Proceedings of the American 



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55. Arthur Hollick : Observations on the geology and botany of Marthas 



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56. W. O. Crosby and H. O. Ballard : Distribution and probable age of the 



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57. W. O. Crosby and A. W. Grabau : Glacial lakes of the Boston basin. 



American Geologist, volume 17, 1896, pages 128-130. 



58. W. O. Crosby: Geological history of the Nashua Valley during the Ter- 



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59. : The glacial lake of the Nashua Valley. Science, volume 9, 1899, 



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60. : Structure and composition of the delta plains formed during 



the Clinton stage in the glacial lake of the Nashua Valey Technology 

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61. B. K. Emerson : Geology of Old Hampshire, Massachusetts. United States 



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63. M. L. Fuller: Champlain submergence in the Narragansett Bay region. 



American Geologist, volume 21, 1898, pages 310-321. 



64. : Season and time elements in sandplain formation. Journal of 



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65. G. H. Stone : The glacial gravels of Maine and their associated deposits. 



United States Geological Survey, Monograph number 34, 1899. 



66. A. W. Grabau : Lake Bouve, an extinct glacial lake in the southern part 



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67. F. G. Clapp: Geological history of the Charles River. Technology Quar- 



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68. : Relations of gravel deposits in the northern part of glacial lake 



Charles, Massachusetts. Journal of Geology, volume 12, 1904, pages 

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