GET /
loc.gov:chronicling-america-api
Summary: Search Chronicling America collection
Operation ID: —
Auth: unknown
Operation ID: —
Auth: unknown
Description
Search digitized newspaper pages from the Chronicling America collection. Returns paginated results with page metadata, OCR text, and image links.
Parameters (14)
dl
(string, query, optional, default: page)
Display level - filter by type of result
Constraints: {'enum': ['all', 'issue', 'page']}
end_date
(string, query, optional)
End date for date range filter (YYYY-MM-DD)
fa
(string, query, optional)
Facet filter. Supports: number_lccn:{lccn}, batch:{batch_name}, language:{code}
fo
(string, query, optional, default: json)
Response format
Constraints: {'enum': ['json', 'yaml']}
front_pages_only
(boolean, query, optional)
Limit search to front pages only
location_city
(string, query, optional)
Filter by city name
location_county
(string, query, optional)
Filter by county name
location_state
(string, query, optional)
Filter by state name
ops
(string, query, optional, default: AND)
Search operation type
Constraints: {'enum': ['PHRASE', 'AND', 'OR', '~5', '~10']}
partof_title
(string, query, optional)
Filter by newspaper title. Case-sensitive, use + for spaces.
qs
(string, query, optional)
Search query terms. Use + between words for multi-word queries.
searchType
(string, query, optional)
Use 'Advanced' for advanced search mode
Constraints: {'enum': ['Advanced']}
sp
(integer, query, optional, default: 1)
Page number for pagination
start_date
(string, query, optional)
Start date for date range filter (YYYY-MM-DD)
Examples (2)
| Title | Type | URL | Action |
|---|---|---|---|
| Search Chronicling America collection | openapi-spec |
https://www.loc.gov/collections/chronicling-america/?qs=world+war&start_date=1920-01-01&end_date=1920-12-31&location_state=california&location_city=san+francisco&partof_title=evening+star&fa=number_lccn:sn83045462 |
|
| Search Chronicling America collection | probe-gate |
https://www.loc.gov/collections/chronicling-america/?fo=json&dl=page&qs=world%2Bwar&ops=AND&start_date=1920-01-01&end_date=1920-12-31&location_state=california&location_city=san%2Bfrancisco&partof_title=evening%2Bstar&fa=number_lccn%3Asn83045462&sp=1 |
Probe History
Status Codes
| Time | Status | Latency | Size |
|---|---|---|---|
| 2026-03-23 10:44:13.276260 | 403 | 103ms | |
| 2026-03-22T13:43:16.401803 | 200 | 4200ms |
Response Changes
| When | Old | New |
|---|---|---|
| 2026-03-23 10:44:13.276260 | 071abb43fd3b |
63dc43daf7d0 |