Robert Oakley Collins (1933-2008) was a prolific historian of Sudan. R.O. Collins traveled with his wife to southern Sudan in 1976, after being invited by Enoch Mading de Garang to compile a report on ways to collect and preserve materials related to Southern Sudan's recent history as part of the Southern Sudan Historical Retrieval Project. Among other things, R.O. Collins consulted officials and scholars and made an inventory of district files and filing systems. See "Robert Oakley Collins". reed.dur.ac.uk. Durham University Library Special Collections Catalogue. 1997. Retrieved June 24, 2017.