LATE 19th & EARLY 20th CENTURY GROUP: Range inc. c1896 10c Blue p.stat env to Austria uprated with 10c Blue tied San Bernardino cds redirected to Lettowitz with Asuncion & Buenos Aires transit cds's on reverse, 1911 env regd to Bordeaux franked 1910 50c Carmine & 75c Deep Blue tied San Bernardino cds in blue with regd label at top 7 July 1928 env franked 1p50 tied Asuncion cds with fine boxed "CORREO AEREO" in purple & "FIRST/EXPERIMENTAL/FLIGHT/MONTEVIDEO/RIO DE JANEIRO" shield h.s. in blue, etc. A nice group. (6 covers) Cross Reference: AIR MAIL COVERS, REGISTERED MAIL, POSTAL STATIONERY (Image)