31. Hardisty Lake, District of Mackenzie, Northwest Territories. (Topography) [cartographic material]. Yale Public content 1942. 2012-06-20T14:31:54Z. 2012-06-29T20:46:15Z. Geological Survey of Canada. English. Public. Hardisty Lake (N.W.T.).
32. Havre de Grace quadrangle, Maryland-Pennsylvania : 15 minute series Yale Public content 1945. 2012-07-24T14:56:00Z. 2021-03-18T19:14:49Z. Geological Survey (U.S.). The Survey. English. Public. Maryland. and Pennsylvania.
33. Hopewell ; Pictou, Guysborough, Colchester, and Halifax Counties, Nova Scotia. (Topography) [cartographic material]. Yale Public content 1939. 2012-06-05T17:46:58Z. 2012-06-13T15:04:27Z. Geological Survey of Canada. English. Public. Hopewell (N.B.) and Canada.
34. Index map : published topographic sheets Yale Public content 1971. 2017-12-07T15:17:21Z. 2017-12-07T15:17:21Z. Missouri. Division of Geological Survey and Water Resources. Division of Geological Survey and Water Resourcesum. English. cartographic image. Public. Missouri and Missouri.
35. Index map of Canada according to the national topographic system (revised 1960) [cartographic material] Yale Public content 1963. 2018-02-23T18:17:53Z. 2020-08-14T18:08:39Z. Canada. Surveys and Mapping Branch. The Branch. English. cartographic image. Public. Canada and Canada.
36. Index to topographic mapping in Tennessee : January 1, 1967 Yale Public content 1967. 2018-05-24T17:59:38Z. 2018-05-24T17:59:38Z. Tennessee Valley Authority. Maps and Surveys Branch, cartographer. Tennessee Division of Geology. English. cartographic image. Public. Tennessee and Tennessee.
37. Index to topographic maps of the United States published at the scale of 1:1,000,000 Yale Public content 1978. 2018-08-07T17:25:33Z. 2020-08-14T18:08:39Z. Geological Survey (U.S.), issuing body. Geological Survey. English. cartographic image. Public. United States.
38. Indian Head quadrangle, Maryland-Virginia, 1956 : 15 minute series (topographic) Yale Public content 1961. 2012-07-13T15:30:32Z. 2021-02-09T17:33:12Z. Geological Survey (U.S.). The Survey. English. Public. Maryland. and Virginia.
39. Indin Lake, District of Mackenzie, Northwest Territories. (Topography) [cartographic material]. Yale Public content 1942. 2012-06-20T14:30:11Z. 2012-06-29T20:46:15Z. Geological Survey of Canada. English. Public. Indin Lake (N.W.T.).
40. Joliette ; Maskinonge, Berthier, Joliette, and Richelieu Counties, Quebec. (Topography) [cartographic material]. Yale Public content 1940. 2012-06-06T17:48:25Z. 2012-06-13T15:04:54Z. Geological Survey of Canada. English. Public. Joliette County (Québec).