This page contains maps from the Arab world which do not mention the "Arabian Gulf", but clearly state "Khalij Al Fars", which is Arabic for Persian Gulf. 

Map of the Islamic Empire, Sobhi Abdul-Karim, Cairo, 1965	Arabic Map of the Persian Gulf, Date Unknown	Arabic Map of Saudi Arabia, Map Art USA, 1966
Islamic Map, Kabul, writing by Mohammed Hosein Haikal, 1968	< Arabic Map of the Persian Gulf, by Arab scholar Dr. Hassan Ibrahim Hassan from his book "Political History of Islam" in Arabic. Published by Hejazi Printing House, Cairo, 1935
Maps courtesy of the Persian Gulf Organisation