Vital records offices, public death and marriage indexes and open-records request guides. 2 official sources, linked directly to the government site.
State vital records office: how to order birth, death, marriage/divorce certificates. Ordering only; no public search. Birth $9, death $5 first copy; marriage/divorce certificates; cause of death restricted.
Official open-records/FOIA request page or guide (state agencies). No central portal; send to each agency's records contact (list on page). Requests may be anonymous.