{"id":"S85110875","label":"Railroad engineers","description":"Here are entered works on engineers engaged in the location, construction and maintenance of railroad structures. Works on persons engaged in driving locomotives are entered under [Locomotive engineers.]","source_url":"https://id.loc.gov/authorities/subjects/sh85110875","normalized_label":"railroad engineers","broader":["http://id.loc.gov/authorities/subjects/sh85043249"],"aliases":[],"source_identifier":"http://id.loc.gov/authorities/subjects/sh85110875","provider":"lcsh","revision":"6872d1a85113c343","taxonomy_revision":"f050b5d4780b1289","title":"Railroad engineers","url":"/topics/S85110875","kind":"topic-directory","aeo_cohort":"topic-directory","catalogue_revision":"f050b5d4780b1289","numeric_address":"900940103818543620","address_version":"morton4x16-v1","coordinates":[0,20,19137,27648],"answer_status":"Directory metadata; local answer requires separate source review","truth_status":"Subject descriptor, not a factual answer or a demonstrated knowledge gap","reviewed_answer":null}