Welcome to Foundry123! I am always fascinated by old buildings. It most likely may have started with this book – a 2nd edition (?) which came out in 1978. There are four (4) editions in all – 1967, 1978, 1988, 2000 and 2010. I spent countless hours perusing the pages. The aim of this blog is to try to locate and catalog all founders’ marks from cast iron buildings in NYC and surrounding areas.