{"id":10,"date":"2026-10-09T03:53:33","date_gmt":"2026-10-09T03:53:33","guid":{"rendered":"https:\/\/hwy99.us\/?page_id=10"},"modified":"2026-10-09T03:53:33","modified_gmt":"2026-10-09T03:53:33","slug":"research-links","status":"publish","type":"page","link":"https:\/\/hwy99.us\/?page_id=10","title":{"rendered":"Research &#038; Links"},"content":{"rendered":"\n<div class=\"wp-block-group h99-hero is-layout-flow wp-block-group-is-layout-flow\">\n<div class=\"wp-block-group h99-container is-layout-flow wp-block-group-is-layout-flow\">\n<p class=\"h99-eyebrow wp-block-paragraph\">THE RESEARCH DIRECTORY<\/p>\n\n<h1 class=\"wp-block-heading\">Follow the sources.<\/h1>\n\n<p class=\"h99-lead wp-block-paragraph\">A starting collection of route histories, preservation projects, and historical map archives for California and Oregon.<\/p>\n<\/div>\n<\/div>\n\n<div class=\"wp-block-group h99-section is-layout-flow wp-block-group-is-layout-flow\">\n<div class=\"wp-block-group h99-container is-layout-flow wp-block-group-is-layout-flow\">\n<p class=\"wp-block-paragraph\">These independent resources provide context and research leads. Their maps and accounts should be checked against dated records when reconstructing a specific alignment. Links reviewed October 2026.<\/p>\n<\/div>\n<\/div>\n\n<div class=\"wp-block-group h99-section is-layout-flow wp-block-group-is-layout-flow\">\n<div class=\"wp-block-group h99-container is-layout-flow wp-block-group-is-layout-flow\">\n<h2 class=\"wp-block-heading\">California history &#038; preservation<\/h2>\n\n<div class=\"wp-block-group h99-resource is-layout-flow wp-block-group-is-layout-flow\">\n<h3 class=\"wp-block-heading\"><a href=\"https:\/\/historic99.org\/routing\/\">Historic Highway 99 Association of California<\/a><\/h3>\n\n<p class=\"wp-block-paragraph\">A California routing overview, with links to preservation work, regional features, and the association\u2019s broader history resources.<\/p>\n<\/div>\n\n<div class=\"wp-block-group h99-resource is-layout-flow wp-block-group-is-layout-flow\">\n<h3 class=\"wp-block-heading\"><a href=\"https:\/\/www.cahighways.org\/ROUTE099.html\">California Highways \u2014 Route 99<\/a><\/h3>\n\n<p class=\"wp-block-paragraph\">An extensive reference on Route 99, including historical routing, legislative context, and links to further research.<\/p>\n<\/div>\n\n<div class=\"wp-block-group h99-resource is-layout-flow wp-block-group-is-layout-flow\">\n<h3 class=\"wp-block-heading\"><a href=\"https:\/\/www.socalregion.com\/highways\/us_99\/\">SoCalRegion \u2014 Virtual Tour of US 99<\/a><\/h3>\n\n<p class=\"wp-block-paragraph\">A photographic tour and historical notes covering portions of the former highway. Useful for connecting route history with identifiable places.<\/p>\n<\/div>\n\n<div class=\"wp-block-group h99-resource is-layout-flow wp-block-group-is-layout-flow\">\n<h3 class=\"wp-block-heading\"><a href=\"https:\/\/ridgeroute.org\/ridge-route-history\/\">Ridge Route Preservation Organization<\/a><\/h3>\n\n<p class=\"wp-block-paragraph\">History of the original Ridge Route and its successors, from an organization dedicated to the historic road\u2019s preservation.<\/p>\n<\/div>\n<\/div>\n<\/div>\n\n<div class=\"wp-block-group h99-section is-layout-flow wp-block-group-is-layout-flow\">\n<div class=\"wp-block-group h99-container is-layout-flow wp-block-group-is-layout-flow\">\n<h2 class=\"wp-block-heading\">Oregon history &#038; routes<\/h2>\n\n<div class=\"wp-block-group h99-resource is-layout-flow wp-block-group-is-layout-flow\">\n<h3 class=\"wp-block-heading\"><a href=\"https:\/\/www.aaroads.com\/guides\/or-099\">AARoads \u2014 Route 99 and Historic US 99<\/a><\/h3>\n\n<p class=\"wp-block-paragraph\">An introduction to Oregon\u2019s 99 corridor, with route descriptions and road photographs.<\/p>\n<\/div>\n\n<div class=\"wp-block-group h99-resource is-layout-flow wp-block-group-is-layout-flow\">\n<h3 class=\"wp-block-heading\"><a href=\"https:\/\/www.oregon.gov\/ODOT\/About\/Pages\/History.aspx\">ODOT \u2014 History &#038; historical maps<\/a><\/h3>\n\n<p class=\"wp-block-paragraph\">An official starting point for Oregon transportation history, including links to digitized state highway maps and other archival resources.<\/p>\n<\/div>\n\n<div class=\"wp-block-group h99-resource is-layout-flow wp-block-group-is-layout-flow\">\n<h3 class=\"wp-block-heading\"><a href=\"https:\/\/digital.osl.state.or.us\/\">State Library of Oregon \u2014 Digital Collections<\/a><\/h3>\n\n<p class=\"wp-block-paragraph\">Search Oregon government publications and historical collections. Follow ODOT\u2019s map links or search by highway, location, and year.<\/p>\n<\/div>\n<\/div>\n<\/div>\n\n<div class=\"wp-block-group h99-section is-layout-flow wp-block-group-is-layout-flow\">\n<div class=\"wp-block-group h99-container is-layout-flow wp-block-group-is-layout-flow\">\n<h2 class=\"wp-block-heading\">Historical maps<\/h2>\n\n<div class=\"wp-block-group h99-resource is-layout-flow wp-block-group-is-layout-flow\">\n<h3 class=\"wp-block-heading\"><a href=\"https:\/\/ngmdb.usgs.gov\/topoview\/\">USGS topoView<\/a><\/h3>\n\n<p class=\"wp-block-paragraph\">Browse and download historical topographic maps by location and edition. These can help identify older roads, bridges, and terrain when researching an alignment.<\/p>\n<\/div>\n\n<h2 class=\"wp-block-heading\">Keep a useful research record<\/h2>\n\n<p class=\"wp-block-paragraph\">Record the map title, publisher, edition or publication date, relevant location, and permanent source link. Keep the evidence for a route line alongside the line itself.<\/p>\n\n<p class=\"wp-block-paragraph\">Links do not grant permission to reproduce photographs, maps, or written material. Credit each source and check its reuse terms before including material in the archive.<\/p>\n<\/div>\n<\/div>\n\n<div class=\"wp-block-group h99-section is-layout-flow wp-block-group-is-layout-flow\">\n<div class=\"wp-block-group h99-container is-layout-flow wp-block-group-is-layout-flow\"><div class=\"wp-block-buttons is-layout-flex wp-block-buttons-is-layout-flex\"><div class=\"wp-block-button\"><a class=\"wp-block-button__link wp-element-button\" href=\"\/?pagename=historic-route-map\">See how the map will be built<\/a><\/div><\/div><\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>THE RESEARCH DIRECTORY Follow the sources. A starting collection of route histories, preservation projects, and historical map archives for California and Oregon. These independent resources provide context and research leads. Their maps and accounts should be checked against dated records when reconstructing a specific alignment. Links reviewed October 2026. California history &#038; preservation Historic Highway [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"page-no-title","meta":{"footnotes":""},"class_list":["post-10","page","type-page","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/hwy99.us\/index.php?rest_route=\/wp\/v2\/pages\/10","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/hwy99.us\/index.php?rest_route=\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/hwy99.us\/index.php?rest_route=\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/hwy99.us\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/hwy99.us\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=10"}],"version-history":[{"count":0,"href":"https:\/\/hwy99.us\/index.php?rest_route=\/wp\/v2\/pages\/10\/revisions"}],"wp:attachment":[{"href":"https:\/\/hwy99.us\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=10"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}