Original 1990 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 the Sonolog Acoustic Well Sounder, which is fully featured.

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

Unbound from a large rare 1990-1991 Composite Catalog, this unique old two-page technical brochure would display beautifully matted and framed. Nice graphics. A fabulous addition to your retro oilfield petroleum industry library. Pages are loose.