Jim has a Peugeot, same as me, but I'm a lot closer if you want to see one in person. Mine is 1980, but I'm not sure the rear position would be big enough.

There was a discussion over on the Tandem forum a while back from a woman who wanted a tandem to ride with her sight impaired husband. She was looking for a similar setup, but I don't recall how it turned out.

Edit: I pulled the tandem down and measured the rear, it is a 20 inch (C-T) seat tube with about 3 more inches available to raise the seat post. About 33-34 inches max from pedal to top of seat.