| 摘要 |
A mailer formed from one piece of relatively stiff cardboard and including a mailing flap, detachable when the mailer reaches the addressee. The mailing flap extends over an open-ended envelope carrying a slide card, connected to the envelope by a tab, to hold the slide card to the envelope during passage through the mail. The slide card may carry a message or may be used in cooperation with the envelope as an informational advertising or educational device. The mailer is formed from four connected sections. Three of the sections are defined by folds and a fourth section is partially severed from the cardboard and its inner end is defined by a slit extending for substantially the length thereof. This section may carry a message or cooperate with educational information on the envelope and is folded between the first and second sections defining the envelope and retained thereto by the tab. The mailer has an adhesive strip extending along the inner side thereof for gluing the envelope into an open-ended envelope having the slide card carried thereon. Score lines enable the mailing flap to be severed from the envelope.
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