Melzian's Bini-English Dictionary

The dictionary our Benin brothers wish does not exist.

It was not authored by a Yorùbá man, neither was it published in Ìbàdàn that wanted to steal their kingdọmi.

But it affirms ọba is a Yorùbá word. It also affirms that the ruling house in Bini are from Ilé Ifẹ.

You will have to burn all the libraries in the world down to argue against these facts. 

Here is where you can download the dictionary for keep.

https://archive.org/details/MelzianAConciseDictionaryOfTheBiniLanguageOfSouthernNigeria1937