A form containing both a pair of labels. In one configuration, the labels can be a shipping label and packing slip. The form is configured such that variable indicia can be printed on a first ply of both labels from a simplex (one-sided) printer. In one configuration, the packing slip and shipping label define a pair of labels across the front of the first ply such that the two labels are substantially coplanar with one another. Alignment of a first ply, second ply and adhesive and release layers disposed between the first and second plies, as well as placement of lines of weakness through one or more of the plies and layers facilitates formation of the shipping label and packing list that can, after accepting printed indicia on the first ply from a one-sided printer, be removed from one another such that they can be affixed to a package. In another configuration, portions of one of the shipping label and packing list can be made to overlay one another such that respective fronts of the first ply are not substantially coplanar with one another.