Original 1941 municipal trade vintage catalog for the DARCO CORPORATION.  Main office was located at 60 East 42nd Street, New York, NY.  The plant was located in Marshall, TX. 

Manufacturers of Hydrodraco - A Highly Activated Carbon for Taste and Odor Control of Water Supplies.

Has product description, application and specifications provide product details.

Unbound from a large rare 1941-1942 Municipal Index Catalog, this unique old one-page technical brochure would display beautifully matted and framed. Nice dated graphics. A fabulous addition to your retro water treatment library.