If you prefer to retain the original electronics, tubes are not hard to
find.  Depending upon the types, they may still be had rather
inexpensively.  My favorite source is Antique Electronic Supply in
Tempe, Arizona.  They are online at www.tubesandmore.com.  They carry
over 3000 tube types.  Most are new, and I seem to remember reading in
one of their catalogs that they have over a million tubes in stock.

They also carry just about any capacitors and resistors you might need
to restore the electronic components in your Storytone.  I know this
because one of my hobbies is vintage tube radios, and I have yet to
need a component part they couldn't supply.  Check them out; I think
you'll be pleasantly surprised.

Incidentally, my books on tube radio restoration and my good luck in
restoring my 12 (so far) tube sets have convinced me -- a former
solid-state diehard -- that properly-designed tube equipment can be
excellent, reliable and long-lived.  It's something to think about.

Good luck with your restoration.

Best Regards,

Joel Hoshaw

 [ Note the key words, "properly designed."  My old Allen organ uses
 [ a medium-mu triode as a voltage-controlled attenuator, and the
 [ harmonic distortion is atrocious!  This is a post-war design,
 [ and good circuitry existed then in radio studio AGC amps, but
 [ Allen chose to be cheap.  It will soon be replaced by a modern
 [ integrated circuit.  -- Robbie