Ключевые слова: abstract, air, air mail, background, blank, blue, business, card, closeup, communication, composition, concept, copy, decoration, decorative, design, detail, document, empty, envelope, frame, grunge, isolated, letter, mail, mailing, message, object, office, ornament, paper, pattern, post, postage, postal, postcard, postman, red, retro, send, single, space, stamp, stripe, symbol, texture, vintage, white, write,