"MCI International, Inc." . . "MCI Communications Corporation. Marketing and Sales Departments." . . "MCI Foundation." . . "Ally & Gargano, Inc." . . "Wells, Rich, Greene." . . "AT & T (Firm)" . . "Telecom*USA, Inc." . . "Crosby, Stills & Nash." . . "Dow Jones & Co." . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . "Series consists of documents and materials from functional units and employees working on various aspects of MCI's marketing operations and activities. Material reflects both divisional orientation and decentralized nature of MCI's everyday marketing activities after the establishment of divestiture and equal access created a new national advertising market for residential and business telecommunication services. It also documents MCI's innovative national programs." . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . "Arts & Entertainment Network." . . "Advanced Network & Services, Inc." . . "MCI Digital Information Services Corporation." . . . . "MCI Telecommunications Corporation." . .