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File:FMIB 38355 Mayflies on the gauge house on the big dam at Keokuk, Iowa, at 5-30 am, July 14, 1916 They were about equally numerous all along.jpeg

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Author
English: Emerson Stringham
Description
English: Mayflies on the gauge house on the big dam at Keokuk, Iowa, at 5:30 a.m., July 14, 1916. They were about equally numerous all along the dam, which is nearly a mile in length
  • Subject: Mayflies, Keokuk Dam (Iowa and Illinois)
  • Geographic Subject: United States--Iowa--Keokuk, United States--Illinois--Keokuk
  • Tag: Insects
Date 1921
date QS:P571,+1921-00-00T00:00:00Z/9
institution QS:P195,Q219563
Current location
English: Freshwater and Marine Image Bank
Accession number
38355
Source/Photographer
English: Needham, James G. (1921) Burrowing Mayflies of Our Larger Lakes and Streams, Bulletin of the United States Bureau of Fisheries, vol. 36, 1917-1918, Washington, DC: Government Printing Office
Permission
(Reusing this file)
Public domain This is a photograph from the Freshwater and Marine Image Bank at the University of Washington. Materials in the Freshwater and Marine Image Bank are in the public domain. No copyright permissions are needed. Acknowledgement of the Freshwater and Marine Image Bank as a source for borrowed images is requested.

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