Thomas Register®

Today, Thomas Register is the proprietary database powering the foundation of TheThomas Register of American Manufacturers, known as the "big green books" and "Thomas Registry", was in its heyday, a 34-volume, 3 section buying guide offering instant sourcing information on industrial products and services, along with comprehensive specifications and detailed product information from thousands of manufacturers. First published in 1898 as a single volume by Harvey Mark Thomas as Hardware and Kindred Trades, it grew to be known as "the purchasing bible" and "the bible of industry" by industrial professionals across North America and around the world. Its 100th and final edition was published in 2006.


1800s 1900s - 1950s 1960s - 1970s 1980s - 1990s 2000s Today
1800s 1900s - 1950s 1960s - 1970s 1980s - 1990s 2000s Today


Thomasnet brings together industrial buyers and sellers nationally, regionally, and locally. For industrial buyers, is the one-stop destination that enables them to find the exact product, service or supplier they need, at the exact time they need it. Through, buyers also have instant access to the detailed information they need to make a purchasing or specifying decision, including line-item product details, supplier product catalogs, CAD drawings, and more.

For industrial suppliers, delivers powerful Internet marketing solutions that help suppliers grow their business online by not only driving qualified industrial traffic to their websites but converting that traffic into buying customers. Thomasnet's complete range of online catalogs, CAD drawings, and e-commerce solutions help suppliers deliver the detailed information buyers need, want and expect on the web. Thomasnet is part of Thomas Industrial Network Inc., a wholly owned subsidiary of Thomas Publishing Company LLC.