The State of North Dakota has a core/sample library which is similar, if not as old. Every log from every well ever drilled in the State has been digitized as well, and the logs, production reports, etc. are available online. Full access requires a fee of $175/year, but downloads are unlimited, and I have used that ability in the past to gain additional information on offset wells while in the field, a far cry from the old days of having to get paper copies from information vendors, something which could take weeks.
https://www.dmr.nd.gov/ndgs/Offices/Core_Library/