This section is from the "The New Home Cook Book" book, by Ladies Of Chicago Et Al. Also available from Amazon: The Home Cook Book: Tried, Tested, Proved.
Slice pumpernickel bread thin and cut these slices in half. Butter two slices of white bread of the same size as the half slices and place the pumpernickel between. This makes a very attractive sandwich, which the most exclusive caterers find much service for.