Here's one from the British Consulate.
From Julia Burton, wife of British Consul General Graham Burton.
Wash the potato.Prick with a fork and rub with salt.Bake in a
350F oven until potato is tender, about 1 hour.Cut in half and
scoop out the flesh without breaking the skin, leaving only a thin
layer of potato on the inside.
Chop the smoked salmon and divide between potato halves.Spoon in 2
or 3 tablespoons of sour cream and top with red or black caviar, or
some of each.Serve.
From the San Francisco Chronicle, 6/15/88.
Posted by Stephen Ceideberg; November 12 1992.