The Diptera or True Flies of Connecticut, First Fasicle, External Morphology; Key to Families; Tanyderidae, Ptychopteridae...
By Crampton, GC, Curran CH, Alexander CP
full title is Guide to the Insects of Connecticut, Part VI., The Diptera or True Flies of Connecticut, First Fasicle, External Morphology; Key to Families; Tanyderidae, Ptychopteridae, Trichoceridae, Anisopodidae, Tipulidae.
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CCW refers to this text as Alexander, 1943k but the publication date on the title page is 1942. Pages between x and 196 are missing from this PDF