Hi
There is quite long article in Polish aviation magazine Aero about the last air flight fighting over Poland in SO/SGO "Polesie" (25 IX - 5 X 1939); 1 PWs-26 and 2 X RWD-8 (46 flights in this period). The title is "Ostatnie biało-czerwone szachownice". This is very extended material, which was first edited in my book "Red Stars over Poland".
The article has 16 b&w phots, pp. 4-13, [in:] Aero nr 1(20)/2009.
The 1st/cover page:
http://kagero.pl/index.php?option=com_c ... &Itemid=29
M. Wawrzyński