During his time at the RSM , he not only gave lectures .
During his time at the RSM , he not only also made significant purchases and helped the museum vastly improve not only the Egyptology displays but also the West African and South Sea 's sections .
During his time at the RSM , he not only gave lectures but also made significant purchases and helped the museum vastly improve not only the Egyptology displays but also the West African and South Sea 's sections .