Royal Castle System, Inc.   Publication Date:   1971-04-20 Publisher.Display:   Miami News Format:   1 black and white print Subjects.Display:   Fast food restaurants Royal Castle (restaurant chain) Source Institution:   HistoryMiami Museum Royal Castle System, Inc.	Royal Castle System, Inc.   Publication Date:   1958-07-11 Publisher.Display:   Miami News Format:   1 black and white print Subjects.Display:   Fast food restaurants Royal Castle (restaurant chain) Source Institution:   HistoryMiami Museum Royal Castle System, Inc.