Abstract: A tamper-evident reusable mailing envelope comprising an outer envelope with a sealing flap and an inner slide pouch in which is positioned a letter or other correspondence to be mailed. The slide-pouch comprises an addressor pocket and an addressee pocket into which the address of the addressor and the address of the addressee, such as in the form of their respective business cards or preprinted address cards, may be inserted so as to properly address the envelope from the addressor to the addressee. Upon receipt by the addressee, the addressee may respond by simply repositioning the business cards from the respective address pockets such that the original addressee's business card is now positioned in the addressor pocket and the original addressor's business card is positioned into the addressee pocket.

Abstract: A portable enclosure, including a thin flexible cover for covering an object and protecting it from the environment, a storage cassette for removably storing said cover therein, a wheeled carriage for removably receiving the storage cassette, whereby the storage cassette either may be transported by the wheeled carriage to a position close to the object whereupon the cover may be removed from the storage cassette and placed over the object or may be removed from the wheeled carriage such that the storage cassette and the cover therein may be used in a location distant from the wheeled carriage.