Original 1974 Oil and Gas trade vintage catalog for the KEYSTONE DEVELOPMENT CORPORATION.  Main office and plant were located at 3406 Mercer Street, Houston, TX.

Manufacturers of Oilfield Equipment.

Products include Sonolog Acoustic Well Sounder (Model D-6B2), Gas-Operated Sonolog Model D-6G2 (Eliminates Explosive Cartridges) and the Leutert LL-57 Dynamometer, all are fully featured.

Has product images, illustration, description, application and specifications provide product details.

Unbound from a large rare 1974-1975 Composite Catalog of Oil Filed Equipment and Services, this unique old two-page technical brochure would display beautifully matted and framed. Awesome graphics. A fabulous addition to your retro oilfield petroleum library. Pages are loose.