Abstract: A C-fold mailer comprises first, second and third panels foldable about a first foldline with the first and second panels in registration one with the other and a second foldline with the third panel overlying the back side of the first panel. Lines of cohesive are formed along the lateral margins and the first foldline of the first and second panels to adhere the panels one to the other, forming a return envelope. The first panel has a return flap with rewettable adhesive. A third panel has segments of cohesive adjacent its distal edge for registration and adherence to corresponding segments of adhesive.

Abstract: A pocket containing business form is formed from an intermediate which comprises a sheet of paperlike material having dimensions of about 8.times.11 inches. The sheet is guillotine cut in two lengthwise, and each of the sections is eccentrically Z-folded to form a pocket, with pressure activated adhesive strips sealed along the edges of the pocket. The portion of the sheet exposed above the pocket is imaged by a laser printer, etc., for example, to indicate due dates for library books. The form is glued on one of the inside covers of a library book, and a 3.times.5 card containing information about the book is inserted in the pocket.