Ida Tarbell,
The History of the Standard Oil Company…
(1904)
“ Terrtories and States Prime White Oil. Water-White Oil. Per Gallon Non-competitive prices per gallon. Competitive prices per gallon. Non-competitive prices per gallon. Competitive prices per gallon. Barrels. Case. Bulk. Barrels. Case. Bulk. Barrels. Case. Bulk. Barrels. Case. Bulk. Highest. Lowest. Difference. Difference per tank car 6,000 gallons. Arizona ... ... ... ... ... ... ... 31 ... ... ... ... 31 ... ... ... Arkansas 14 ... 13 8 ... 71⁄2 16 ... 17 ... ... ... 17 71⁄2 91⁄2 $570 ”
