Have you looked inside the xfmrs? If the core size is 1/2", you may still be able to get a bobbin (windings) from antique electronic in Tempe. I've "rebuilt" a few transformers over the years doing this. It's difficult, and messy, but.... For other sizes I've had to resort to other methods. I did one where I replaced the iron with a piece of pine, (hollowed out to take the modern transformer) and then wire brushed the wood to "line" it so it looked 9under the flat black paint) like laminations.
http://www.oldradiosrus.com/build.html
There are 2 xfmr rebuilds shown on that page...