"Announcements that admission stamps were sent by Friederike, Helga and Hugo Robiček (Robitschek), to Erwin Seidner, Prague, May and August 1944"@mul . . "A 7893 – 3, 4, 5, 6"@mul . . . . "A 7893 – 3, 4, 5, 6"@mul . .