I went into a local Habitat For Humanity store today, and found some great deals on new and used wood of all types. They have an entire wall for lengths of trim of all kinds. I looked through it and found several pieces suitable for missing radio cabinet parts. I also found a nice 4' length of walnut 1x6, and a 22-1/2" X 100" roll of cherry veneer. Got it all for about $15.
They also have a used furniture and cabinet dept that will make a great resource for radio cabinet veneer and wood stock.
Their housewares dept yielded ten old 10" records and a tiny old Bulova 870 series transistor radio, w/case in near perfect condition. The records are $1 each, and the radio was a whopping .75.
If you have anything like this in your area, you really need to check it out. It's a gold mine for all kinds of household and electronics related stuff.