News & CommentScientific Events PROGRESS IN THE WORK OF MAPPING THE UNITED STATES See allHide authors and affiliations Science 26 Aug 1921:Vol. 54, Issue 1391, pp. 165-166DOI: 10.1126/science.54.1391.165-a Article Info & Metrics eLetters PDF This is a PDF-only article. The first page of the PDF of this article appears below.