Map Ruthenberg [includes Barkenfelde, Domslaff, Heinrichswalde (partial), Schönwerder] http://amzpbig.com/maps/025_TK25/2368_Ruthenberg_1935.jpg
Map Ruthenberg 1935 [includes Heinrichswalde [most]: http://amzpbig.com/maps/025_TK25/2468_Peterswalde_1935.jpg
Map Prechlau 1935: http://maps.mapywig.org/m/German_maps/series/025K_TK25/2169_(786)_Prechlau_Ausg.F_1935_UW.jpg