This is a link to an article about the foundry that creates the beginnings of Steinway’s quality pianos. If you’re interested in seeing where these instruments’ creation is rooted, check out this link. This foundry has been working since 1938 and creates 4000 Steinway plates a year!
https://www.npr.org/2013/11/09/243988349/in-the-heat-of-the-foundry-steinway-piano-hearts-are-made
Piano Repair in NJ