Original oil and gas trade magazine vintage ad for MISSION MANUFACTURING COMPANY of Houston, TX. For High Pressures Oil or Gas Mission Automatic Lubricated Plug Valves Are The Answer. Nothing but the finest will bear the name of Mission. Unique 1955 old oilfield petroleum industry valve equipment magazine advertisement. On the reverse side is an ad for AMERICAN IRON AND MACHINE WORKS COMPANY, INC. a subsidiary of American Machine and Foundry Company. American Iron Flash Welded Tool Joints a Product of Modern Technology, applied with strict conformity to American Iron's high-quality standards! Old 1955 petroleum industry equipment magazine advertisement.