Petroleum County, Montana GenealogyEdit This Page
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United States Montana Petroleum County
Petroleum County Courthouse
201 E Main; PO Box 226;
Winnett, MT 59087
Director of Records has birth, marriage, death, burial, divorce,
probate, court and land records from 1925
1924--Petroleum County was created 24 November 1924 from Fergus and Garfield Counties.
County seat: Winnett 
Societies and Libraries
Family History Centers
- USGenWeb project. May have maps, name indexes, history or other information for this county. Select the state, then the county.
- Family History Library Catalog
- ↑ The Handybook for Genealogists : United States of America, 10th ed., (Draper, UT: Everton Publishers, 2002), p. 417.
- ↑ The Handybook for Genealogists: United States of America,10th ed. (Draper, UT:Everton Publishers, 2002).