"Secretaries, look!" begins a typewriter ad from around 1955. "Look how Underwood and Underwood alone helps your keep fingernails and hands lovely to look at, lovely to touch!" The first feature: "exclusive half-moon keys." The shape means "fingernails never touch the keys. No more worry about short unfashionable… » 11/29/07 10:45am 11/29/07 10:45am