Greetings! My name is Herman, I'm a design student from Netherlands. I'm writing an essay on cities and their logo/emblems/coats of arms for the Imperial Academy of Arts. Istanbul's logo and logo of IBB caught my attention. Unfortunately, all I could find online are just scraps of information. I would like to know if you can provide an information about this logo, it's history and designer behind it. Maybe something about the competition of 1969, it's current usage and variants. That would really help me a lot. Many thanks in advance! Regards, Herman.