Oklahoma Probate Records, 1887-2008 Description Probate records and estate files from Oklahoma counties. The content and time period varies by county. How to Use this Collection » View Images in this Collection Browse through 6044798 images Citing this Collection "Oklahoma Probate Records, 1887-2008." Images. FamilySearch. http://FamilySearch.org : 14 June 2016. County courthouses, Oklahoma.