Petroleum and Natural Gas In Oklahoma By L. C. JJNIDER. Originally published in 1913. PREFACE: This hand book is written with the view of putting within reach of all interested, a comprehensive but brief review of the oil and gas industry of Oklahoma, and the prospects for the future development of this industry. A large portion of the book is taken up with descriptions of the producing fields and discussions of the conditions in these fields. The geology of the State is considered with reference to the occurrence of oil and gas in the developed areas and with reference to the probable or possible occur rence of these substances in other portions of the State. The methods of prospecting for oil and gas and the use of geology as a guide for prospecting are considered rather fully. Some items of general interest, such as brief notes on transportation and refining, are included. In the con sideration of the oil and gas of the different fields it is necessary to refer constantly to the geo