Original oil and gas trade magazine vintage ad for SHAFFER TOOL WORKS, of Brea, CA., Houston, TX., Odessa, TX., Oklahoma City, OK., Farmington, NM., Casper, WY., and Houma, LA. High Pressure Drilling and Control Equipment, Well Head Equipment, Fishing Tools. This unique 1959 old oilfield petroleum well drilling industry equipment magazine advertisement would look fabulous matted and framed. Approximate size 9 x 12 inches.