21. Davis, W. Va. Yale Public content 1921. 2011-12-12T21:40:05Z. 2022-03-29T20:40:59Z. Geological Survey (U.S.). U.S. Geological Survey. English. Public. West Virginia.
22. Eaton, Weld County, Colorado [insurance map] [cartographic material] Yale Public content 1921. 2017-05-22T18:38:47Z. 2017-06-06T21:07:54Z. Sanborn Map Company. Sanborn Map Co. English. cartographic image. Public. Colorado, Eaton, Eaton (Colo.), and Eaton.
23. Ellenton Yale Public content 1921. 2011-12-12T21:36:46Z. 2022-03-29T20:40:36Z. Geological Survey (U.S.). U.S. Geological Survey. English. Public. Georgia and South Carolina.
24. Eutawville Yale Public content 1921. 2011-12-12T21:36:47Z. 2022-03-29T20:40:36Z. Geological Survey (U.S.). U.S. Geological Survey. English. Public. South Carolina.
25. Farrell's map of the southwestern oil fields showing approximate location of the lease holdings in the various Texas counties : owned and for sale by E.L. Farrell Yale Public content 1921. 2021-06-29T18:24:21Z. 2021-06-29T18:27:06Z. E.T. Morten. English. cartographic image. Public. Texas and Texas.
26. Federal Government dredging operations, projects & surveus within port district Yale Public content 1921. 2008-10-02T17:10:21Z. 2020-06-05T17:50:23Z. English. Public. New York (N.Y.).
27. General map of China and adjacent regions showing treaty ports and railroads Yale Public content 1921. 2012-12-04T20:19:35Z. 2020-06-30T18:50:38Z. Geological Survey (U.S.). Topographic Branch. Department of State. English. Public. China and East Asia.
28. Gilroy Hot Springs Yale Public content 1921. 2011-12-12T21:23:01Z. 2022-03-29T20:38:54Z. Geological Survey (U.S.). U.S. Geological Survey. English. Public. California.
29. Golconda Yale Public content 1921. 2011-12-12T21:26:54Z. 2022-03-29T20:39:24Z. Geological Survey (U.S.). U.S. Geological Survey. English. Public. Illinois and Kentucky.
30. Gonzales, Calif Yale Public content 1921. 2011-12-12T21:23:02Z. 2022-03-29T20:38:54Z. Geological Survey (U.S.). U.S. Geological Survey. English. Public. California.