Since I don't have the info you are looking for, here's how to go about finding it.
Shoes are a matter of measuring diameter and width and going to the Mom and Pop (M&P) parts stores, or even Napa. At the least, they can be re-lined, though there aren't as many re-liners as there was even 5 years ago.
Wheel cylinders all have casting numbers on them. Internet search will reveal cross references and availability, but you might also find them at the M&P parts stores or Napa, again, if you make them break out the real parts book made of paper!
If you're talking about leaf springs, I go to St Louis Spring. US made with Canadian steel. They hook you up with the u-bolts as well. If you're talking about brake springs, then you're in a whole 'nuther world there... That's where you need to start searching old time, been around for years, brake and spring shops like Tomlinson's in Lima, Ohio and Jennings in Medford, Oregon. (I don't know if Tomlinson's is still in business or not. Just google or bing it)
Best I can do from here...
