Abstract: A binder for a telephone directory or the like has a spine and top and bottom covers adapted to overlie the top and bottom faces of the directory. The binder is attached to the directory and the improvement resides in one or more auxiliary sheets, each folded in accordion fashion and carried by the binder inside the top cover so as to lie, in folded mode between the binder top cover and the directory top face. When the binder is open, the sheets can be unfolded to extend outwardly to present an area several times that of any page in the directory and is thus adapted to carry indicia in addition to the listings in the directory. The sheet or sheets are carried by a channel element attached to the inside of one of the binder covers.