@article {21862,
	title = {The orders and relationships of apterigotan insects},
	journal = {Journal of the New York Entomological Society},
	volume = {24},
	year = {1916},
	pages = {267-301},
	author = {Crampton, G. C.}
}
@article {21863,
	title = {A phylogenetic study of the larvel and adult head in Neuroptera, Mecoptera, Diptera, and Trichoptera},
	journal = {Annals of the Entomological Society of America},
	volume = {10},
	year = {1917},
	pages = {337-344},
	author = {Crampton, G. C.}
}
@article {21864,
	title = {A comparison of the labium in certain holometabolous insects from the standpoint of phylogeny},
	journal = {Proceedings of the Entomological Society of Washington},
	volume = {25},
	year = {1923},
	pages = {171-180},
	author = {Crampton, G. C.}
}
@article {21865,
	title = {A phylogenetic study of the maxillae throughout the orders of insects},
	journal = {Journal of the New York Entomological Society},
	volume = {31},
	year = {1923},
	pages = {77-107, pl. XII-XVII},
	author = {Crampton, G. C.}
}
@article {21866,
	title = {Remarks on the phylogeny and interrelationships of nematocerous Diptera},
	journal = {Psyche (Cambridge)},
	volume = {31},
	year = {1924},
	pages = {238-242},
	author = {Crampton, G. C.}
}
@article {21867,
	title = {A phylogenetic study of the thoracic sclerites of the non-tipuloid nematocerous Diptera},
	journal = {Annals of the Entomological Society of America},
	volume = {18},
	year = {1925},
	pages = {49-74, pl. III-VII},
	author = {Crampton, G. C.}
}
@article {21868,
	title = {A phylogenetic study of the thoracic sclerites of the psychodoid Diptera, with remarks on the interrelationships of the Nematocera},
	journal = {Entomological News},
	volume = {37},
	year = {1926},
	pages = {65-70, pl. III},
	author = {Crampton, G. C.}
}
@article {21869,
	title = {A phylogenetic study of the posterior matathoracic and basal abdominal structures of insects, with particular reference to the Holometabola},
	journal = {Journal of the New York Entomological Society},
	volume = {39},
	year = {1931},
	pages = {323-357},
	author = {Crampton, G. C.}
}
@article {21870,
	title = {The structure called parameres in male insects},
	journal = {Bulletin of the Brooklyn Entomological Society},
	volume = {33},
	year = {1938},
	pages = {16-24},
	author = {Crampton, G. C.}
}
@article {21871,
	title = {The terminal abdominal structures of male Diptera},
	journal = {Psyche (Cambridge)},
	volume = {48},
	year = {1941},
	pages = {79-94, pl. VIII},
	author = {Crampton, G. C.}
}
@article {21872,
	title = {A comparetive morphological study of the terminalia of male calypetrate cyclorrhaphous Diptera and their acalypterate relatives},
	journal = {Bulletin of the Brooklyn Entomological Society},
	volume = {39},
	year = {1944},
	pages = {1-31},
	author = {Crampton, G. C.}
}
