Original oil and gas trade magazine vintage ad for CLIMAX ENGINEERING COMPANY, was located at 76 West 18th Ave., Clinton, IA. Adverse Conditions, 32 Degrees Below Zero Didn't Stop the Paymaster Drilling Unit. Distributed by THE NATIONAL SUPPLY COMPANIES. Photo shows the Climax Paymaster Unit at the Eagle Butte Oil Company camp at Many Berries, Alberta, Canada. Pictured are crew members Mr. Morris and Mr. McCullough, drillers; Mr. Brady and Mr. Cameron, tool dressers; and Mr. Fifer, a National Supply Company field man. Unique 1928 old oilfield petroleum well drilling industry equipment magazine advertisement.