{"data":{"slug":"us-census-1950","name":"1950 U.S. Census (National Archives)","homepage":"https://1950census.archives.gov/","record_types":["census"],"places":["us"],"years":{"from":1950,"to":1950},"access_method":"open_web","api_docs_url":null,"terms_url":null,"robots_ok":true,"rate_limit":null,"key_required":false,"key_env":null,"review":"verified","verified_at":"2026-11-02","evidence":["https://1950census.archives.gov/","https://1950census.archives.gov/robots.txt","https://registry.opendata.aws/nara-1950-census/"],"notes":"Link-out only. The site's name search runs on an internal JSON endpoint the page script calls; NARA publishes no documentation or terms for it, so Lineage does not call it. robots.txt allows all agents with a crawl delay of 1 second. The full population schedules (images and the name index) are an open dataset on the AWS Registry of Open Data (US Government work), far too large to read per request. A plan node for the 1950 census is not executable and links here for a person to search by name, state and county. The probe reads the home page once a day.","tags":{"record_type":["census"],"era":"1950-1950","places":[]},"link_out":"https://1950census.archives.gov/","status":"live","key_configured":null,"health":{"status":"live","checked_at":"2026-11-03T03:51:17.646Z","http_status":200,"latency_ms":52,"probe_url":"https://1950census.archives.gov/","reason":null},"links":{"self":"https://api.lineage.rexstjohn.com/v1/sources/us-census-1950","page":"https://api.lineage.rexstjohn.com/sources/us-census-1950","llms_txt":"https://api.lineage.rexstjohn.com/sources/us-census-1950/llms.txt"}},"checked_at":"2026-11-03T03:51:17.646Z"}