The Sudan Study Group (SSG)
Formed in 1977 by a group of enthusiasts who were, at the time, members of the Oriental Philatelic Association of London (OPAL), but recognised the need for a separate group devoted solely to the study of Sudanese stamps, postal history and related subjects. Since then the membership of the Group has grown to about 100 worldwide.
The aim of the SSG is the study of the stamps and postal history of the Sudan in all its aspects from earliest times until the present day, to publish the results of research and give members the opportunity to meet regularly.