Forges and Blacksmith Businesses
Iron Antler Forge is a local blacksmith doing well.
G. Krug and Son is the oldest continually operating blacksmith in the United States, in business for over 200 years.
Sources for Tools and Supplies
For some unique tongs, hammers, and other tools visit GS Blacksmith Tongs.
If you are looking for a maker (touch) mark, check out Columbia Marking Tools.
Looking for tool steel? Try Aldo Bruno, the New Jersey Steel Baron.
Books and Info
A Blacksmithing Primer: A Course in Basic and Intermediate Blacksmithing by Randy McDaniel is a good book to get if you are just starting out.
Another good book is 101 Metal Projects for the Novice Blacksmith: A "How-to" Shop Manual for Beginners
© Ken Scharabok, Poor Boy Blacksmith Tools (An ebay store), 1645 West Blue Creek Road, Waverly TN 37185.
A great resource suggested by a teacher and his students is here: https://store.alansfactoryoutlet.com/Blacksmithing-Basics-s/1909.htm While the website exists to sell pre-fab metal buildings, the owner is a science and industry enthusiast. He gives a basic overview of the craft and also has some links to excellent resources. While you're there, check out his infographics page, too. It's awesome!
Another great resource suggested by fellow artisans Sam and Glenn is this introductory guide to welding: https://dragonfiretools.com/workbench-guides-steel-welding-101-2/. It also contains many links to more information, so it's definitely worth a look!