1 p. A letter from W. H. Ballou to the editor of Scientific American discussing statements made by J. F. McIndoe about the south jetty at the mouth of the Columbia River. The letter discusses discrepancies between McIndoe's various estimates of time and money needed to complete the jetty.
Number of Pages
Ballou, W. H. The Columbia River Jetties. Scientific American. v. 107 (October 19, 1912) p. 327