2 Vintage 1974 booklets on Direct Mail List Building by Allan Dale and  Direct Mail Testing & Measurement by Robin Fairlie by The Post Office,   Booklets 34 pages and 26 pages. Covers a little grubby and back inside cover has few age browning spots. Size of booklets 7 " inches  by 4" inches. Weight 31g   Postage by Royal Mail 1st class signed