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

---

Size: 1419px × 1762px
Photo credit: © Archive PL / Alamy / Afripics
License: Licensed
Model Released: No

Keywords: ancient, book, bygone, copy, cover, editorial, historic, history, illustration, news, nostalgia, nostalgic, photo, photograph, photography, space, stock, textbook, vintage