{"id":13176,"date":"2025-05-22T08:34:46","date_gmt":"2025-05-22T13:34:46","guid":{"rendered":"https:\/\/www.agron.iastate.edu\/glsi\/?p=13176"},"modified":"2026-04-02T08:41:51","modified_gmt":"2026-04-02T13:41:51","slug":"central-united-states-1931","status":"publish","type":"map","link":"https:\/\/www.agron.iastate.edu\/glsi\/map\/central-united-states-1931\/","title":{"rendered":"Central United States (1931)"},"content":{"rendered":"\n<div class=\"wp-block-ugb-container ugb-container ugb-31d465b ugb-container--v2 ugb-container--design-plain ugb-main-block\"><style>.ugb-31d465b-wrapper > .ugb-container__side{align-items:center !important}@media screen and (min-width:768px){.ugb-31d465b-content-wrapper.ugb-container__content-wrapper{width:75% !important}.ugb-31d465b.ugb-container{padding-left:60px !important}}@media screen and (min-width:768px){.ugb-31d465b > .ugb-inner-block > .ugb-block-content > *{padding-top:0px !important;padding-bottom:0px !important}}<\/style><div class=\"ugb-inner-block\"><div class=\"ugb-block-content\"><div class=\"ugb-container__wrapper ugb-31d465b-wrapper\"><div class=\"ugb-container__side\"><div class=\"ugb-container__content-wrapper ugb-31d465b-content-wrapper\"><\/div><\/div><\/div><\/div><\/div><\/div>\n\n\n\n<div class=\"wp-block-ugb-container ugb-container ugb-9406a1f ugb-container--v2 ugb-container--design-plain ugb-main-block\"><style>@media screen and (min-width:768px){.ugb-9406a1f > .ugb-inner-block > .ugb-block-content > *{padding-bottom:0px !important}}<\/style><div class=\"ugb-inner-block\"><div class=\"ugb-block-content\"><div class=\"ugb-container__wrapper ugb-9406a1f-wrapper\"><div class=\"ugb-container__side\"><div class=\"ugb-container__content-wrapper ugb-9406a1f-content-wrapper\"><div class=\"paragraph-widget paragraph-widget--text-html\">\n\t<div class=\"text-content\">\n\t\t<h4>This soil map from the <em data-start=\"105\" data-end=\"136\">Atlas of American Agriculture<\/em> covers portions of the central and southeastern U.S., including Missouri, Illinois, Indiana, Kentucky, and surrounding areas. It categorizes soils by named series and phases such as Houston, Grenada, and Baxter, emphasizing regional variation in texture, parent material, and drainage. The color-coded legend and township overlays assist in agricultural land-use planning and regional soil characterization during the early 20th century.<\/h4>\n\n\t<\/div>\n<\/div>\n<\/div><\/div><\/div><\/div><\/div><\/div>\n\n\n\n<figure class=\"wp-block-image aligncenter size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"2560\" height=\"1693\" src=\"https:\/\/www.agron.iastate.edu\/glsi\/files\/2025\/05\/USA-Soils-of-1931-Marbut-7-of-12-scaled.jpg\" alt=\"\" class=\"wp-image-12868\" style=\"width:450px\" srcset=\"https:\/\/www.agron.iastate.edu\/glsi\/files\/2025\/05\/USA-Soils-of-1931-Marbut-7-of-12-scaled.jpg 2560w, https:\/\/www.agron.iastate.edu\/glsi\/files\/2025\/05\/USA-Soils-of-1931-Marbut-7-of-12-300x198.jpg 300w, https:\/\/www.agron.iastate.edu\/glsi\/files\/2025\/05\/USA-Soils-of-1931-Marbut-7-of-12-1024x677.jpg 1024w, https:\/\/www.agron.iastate.edu\/glsi\/files\/2025\/05\/USA-Soils-of-1931-Marbut-7-of-12-768x508.jpg 768w, https:\/\/www.agron.iastate.edu\/glsi\/files\/2025\/05\/USA-Soils-of-1931-Marbut-7-of-12-1536x1016.jpg 1536w, https:\/\/www.agron.iastate.edu\/glsi\/files\/2025\/05\/USA-Soils-of-1931-Marbut-7-of-12-2048x1354.jpg 2048w\" sizes=\"auto, (max-width: 2560px) 100vw, 2560px\" \/><\/figure>\n\n\n<div class=\"paragraph-widget paragraph-widget--text-html\">\n\t<div class=\"text-content\">\n\t\t<p>Right-click image file to save.<\/p>\n<h4>Source:<\/h4>\n<p>U.S. Department of Agriculture. 1931. <em data-start=\"628\" data-end=\"687\">Atlas of American Agriculture \u2013 Soils, Plate 8, Section 7<\/em>. Bureau of Chemistry and Soils, USDA.<\/p>\n<h4>Resolution:<\/h4>\n<p>Printed analog map at a scale of 1:2,500,000. Extensive legend includes dozens of identified soil series. Township and river systems are clearly marked.<\/p>\n<h4>Suggested Use:<\/h4>\n<p>Useful for evaluating historical soil survey methods, midwestern and southern agricultural practices, and the evolution of regional soil science. Also valuable for land capability comparisons with modern datasets.<\/p>\n<p>&nbsp;<\/p>\n<h4>References<\/h4>\n<p>USDA. 1931. <em data-start=\"1165\" data-end=\"1223\">Atlas of American Agriculture \u2013 Soils Plate 8, Section 7<\/em>. U.S. Department of Agriculture, Bureau of Chemistry and Soils.<br data-start=\"1287\" data-end=\"1290\">Soil Survey Staff. 2014. <em data-start=\"1315\" data-end=\"1357\">Gridded Soil Survey Geographic (gSSURGO)<\/em>. USDA-NRCS. <a class=\"\" href=\"http:\/\/datagateway.nrcs.usda.gov\" target=\"_new\" rel=\"noopener\" data-start=\"1370\" data-end=\"1402\">http:\/\/datagateway.nrcs.usda.gov<\/a><br data-start=\"1402\" data-end=\"1405\">Soil Survey Staff. 2014. <em data-start=\"1430\" data-end=\"1471\">Official Soil Series Descriptions (OSD)<\/em>. USDA-NRCS. <a class=\"\" href=\"https:\/\/soilseries.sc.egov.usda.gov\/osdname.asp\" target=\"_new\" rel=\"noopener\" data-start=\"1484\" data-end=\"1531\">https:\/\/soilseries.sc.egov.usda.gov\/osdname.asp<\/a><br data-start=\"1531\" data-end=\"1534\" data-is-only-node=\"\">Miller, B.A. and C.L. Burras. 2015. <em data-start=\"1570\" data-end=\"1660\">Comparison of surficial geology maps based on soil survey and in-depth geological survey<\/em>. <em data-start=\"1662\" data-end=\"1677\">Soil Horizons<\/em> 56(1). doi:10.2136\/sh14-05-0005<\/p>\n\n\t<\/div>\n<\/div>\n","protected":false},"featured_media":12868,"parent":0,"template":"","meta":{"_acf_changed":false,"inline_featured_image":false,"ngg_post_thumbnail":0},"categories":[400,1],"tags":[310,121],"location":[401],"surface-characteristic":[338],"class_list":["post-13176","map","type-map","status-publish","has-post-thumbnail","hentry","category-historical-usa","category-uncategorized","tag-maps","tag-soil-maps","location-usa","surface-characteristic-soil"],"acf":[],"featured_image_urls_v2":{"full":["https:\/\/www.agron.iastate.edu\/glsi\/files\/2025\/05\/USA-Soils-of-1931-Marbut-7-of-12-scaled.jpg",2560,1693,false],"thumbnail":["https:\/\/www.agron.iastate.edu\/glsi\/files\/2025\/05\/USA-Soils-of-1931-Marbut-7-of-12-150x150.jpg",150,150,true],"medium":["https:\/\/www.agron.iastate.edu\/glsi\/files\/2025\/05\/USA-Soils-of-1931-Marbut-7-of-12-300x198.jpg",300,198,true],"medium_large":["https:\/\/www.agron.iastate.edu\/glsi\/files\/2025\/05\/USA-Soils-of-1931-Marbut-7-of-12-768x508.jpg",768,508,true],"large":["https:\/\/www.agron.iastate.edu\/glsi\/files\/2025\/05\/USA-Soils-of-1931-Marbut-7-of-12-1024x677.jpg",1024,677,true],"1536x1536":["https:\/\/www.agron.iastate.edu\/glsi\/files\/2025\/05\/USA-Soils-of-1931-Marbut-7-of-12-1536x1016.jpg",1536,1016,true],"2048x2048":["https:\/\/www.agron.iastate.edu\/glsi\/files\/2025\/05\/USA-Soils-of-1931-Marbut-7-of-12-2048x1354.jpg",2048,1354,true]},"post_excerpt_stackable_v2":"<p>This soil map from the Atlas of American Agriculture covers portions of the central and southeastern U.S., including Missouri, Illinois, Indiana, Kentucky, and surrounding areas. It categorizes soils by named series and phases such as Houston, Grenada, and Baxter, emphasizing regional variation in texture, parent material, and drainage. The color-coded legend and township overlays assist in agricultural land-use planning and regional soil characterization during the early 20th century. Right-click image file to save. Source: U.S. Department of Agriculture. 1931. Atlas of American Agriculture \u2013 Soils, Plate 8, Section 7. Bureau of Chemistry and Soils, USDA. Resolution: Printed analog map at&hellip;<\/p>\n","category_list_v2":"<a href=\"https:\/\/www.agron.iastate.edu\/glsi\/category\/historical-usa\/\" rel=\"category tag\">Historical USA<\/a>, <a href=\"https:\/\/www.agron.iastate.edu\/glsi\/category\/uncategorized\/\" rel=\"category tag\">Uncategorized<\/a>","author_info_v2":{"name":"","url":""},"comments_num_v2":"0 comments","yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.4 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Central United States (1931) - Geospatial Laboratory for Soil Informatics<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.agron.iastate.edu\/glsi\/map\/central-united-states-1931\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Central United States (1931) - 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