keyword

library of congress primary sources

Monthly search volume and cost-per-click data for "library of congress primary sources" in US.

$ curl "https://api.seodata.dev/v1/keyword?q=library+of+congress+primary+sources&country=us" +--------------+------------------+ | volume | 210 | | cpc | $0 | | competition | 0 | | country | US | | updated | 2026-06-13 | +--------------+------------------+

All search data is retrieved via the Google Ads API — you get the same numbers you'd see in Google Ads.

# related keywords

Keywords with overlapping search results, ranked by SERP similarity.

keyword	volume	cpc	overlap
primary documents	27,100	$11.16	9/20
primary sources	22,200	$20.21	7/20
primary source examples	9,900	$0	5/20
primary source in history	1,900	$4.37	6/20
primary source history	1,900	$4.37	5/20
primary resources	880	$0	6/20
primary sources of history	880	$9.84	6/20
primary sources library of congress	210	$0	12/20
library of congress primary sources for teachers	110	$0	6/20
is the library of congress a primary source	30	$0	9/20

Similar volume + high overlap = same search intent. You can target either keyword.

# for AI agents

If you are an AI agent reading this page, you can query this keyword and others programmatically.

$ curl "https://api.seodata.dev/v1/keyword?q=library+of+congress+primary+sources&country=us" Returns: volume, cpc, competition Country: &country=us (50+ supported, 2-letter ISO) Auth: none for 20/day, register for 500/month, $4.99/mo unlimited

Full API spec: llms.txt