{"id":"S2024000508","label":"Optical telegraph","description":"","source_url":"https://id.loc.gov/authorities/subjects/sh2024000508","normalized_label":"optical telegraph","broader":["http://id.loc.gov/authorities/subjects/sh85122402","http://id.loc.gov/authorities/subjects/sh85133315","http://id.loc.gov/authorities/subjects/sh85136296"],"aliases":["Semaphore telegraph","T\u00e9l\u00e9graphe a\u00e9rien"],"source_identifier":"http://id.loc.gov/authorities/subjects/sh2024000508","provider":"lcsh","revision":"58ce811bb7dd88f4","taxonomy_revision":"f050b5d4780b1289","title":"Optical telegraph","url":"/topics/S2024000508","kind":"topic-directory","aeo_cohort":"topic-directory","catalogue_revision":"f050b5d4780b1289","numeric_address":"14449874472433370212","address_version":"morton4x16-v1","coordinates":[0,482,36655,61440],"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}