Love the MP3! You're right, I'm sure that wouldve been a hit. You're doing a wonderful job of capturing a vintage sound both stylistically and sonically - I'm impressed! Sticking to equipment (try an AEA 44 on your voice, if possible) and instruments (archtop hollowbodies, upright bass, etc) of the era will be a plus.
Its really important to remember that every voice is unique, and the same is true for mics. Ribbons cant be classified by one sound because, like I said before, all mics have their own characteristics - put a 44 up to a 122 and it will be night and day. It can be a tough task to find the right mic for a voice, so while we may have an idea of what we would like to use, the final result can sometimes be surprising.
I guess what it comes down to is that in the 50's and 60's there were still limitations on how accurate audio capture equipment was (coupled with playback systems) while today we have extended frequency responses and incredibly accurate playback systems. Stick an Earthworks QTC50 into a clean preamp (think grace 801) to get exactly what is happening or take a 47 or (better yet) a 44 into a neve 1073 and get "that" sound that you're looking for. Musically, though, you're on the money. Spring reverbs were also huge back then, so dont be afraid to go nuts!
Ribbons are making a huge comeback (thanks partially to Royer) and the products available are phenomenal (122!!!!) - silky is the word that comes to mind. If I want character (similar to what I think you're looking for) I reach for a vintage condenser or ribbon; if I want accuracy I go for a modern condenser, and if I want high SPL and noise rejection (among other things) I usually use dynamic. There are millions of exceptions to this, of course, but it's a start...
I'm sorry if that was useless. If you have specific questions, i'm happy to help where I can.