Oil & Gas Drilling Report - Illinois State Geological Survey

Drilling data and statistics were printed in monthly serial reports. The earliest editions were issued monthly as mimeographed data reports. The information release was originally packaged for six-month periods (June–November, December–May) for a charge of 90 cents to cover the mailing cost of 6 issues. The series is closed. No. 1 (1936) to No. 772 (2001)

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