Related items available in Philatelic Books ENTWISTLE Charles R. Wartime Airmails. The locally registered and foreign air services of British Asia. Chavril Press 1998 24pp. 1st ed., fine in blue card covers. £8 See more Related items available in Miscellaneous books PENANG MUSEUM Penang through old postcards State Museum Board, Penang 1986 128 large pp. 1st ed., fine in card covers. £20 See more