"Another useful option a relative of mine used was to return any unsolicited offers for credit cards and the like in the enclosed reply-paid envelope, pushing up the costs for the junk mail sender."
"As soon as she was back in England at the Stone House, Dame Beatrice sent a reply-paid telegram to Mrs Biancini:"
"In the afternoon he had walked from the inn into the town, accompanied by Mr. Cupples, and had there made certain purchases at a chemist's shop, conferred privately for some time with a photographer, sent off a reply-paid telegram, and made an inquiry at the telephone-exchange."