Air Mail cover 1897-1914 group of pioneer flight cards with 1909 Frankfurt aviation meeting both cards unused and one used with the ILA vignette, 1909 flying championship card and composite picture post card, 1912 Mannheim - Heidelberg official cards (3) and one plain card, Gotha - Erfurt card with 10pf. vignette (damaged), Wiesbaden flight card, 1913 Prinz Heinrich card and 1914 Leipzig - Dresden semi-official cards (2); a very useful lot. (18)