Masque ibibio Idiok Ekpo
Nigéria
M.P.A., no. 92, illustrated
Department of Fine Arts, Carnegie Institute, "Exotic Art from Ancient and Primitive Civilizations: Collection Jay C Leff", October 15 1959 to January 3, 1960, Pittsburgh, no. 337
Museum of Art, Carnegie Institute, "The Art of Black Africa: Collection of Jay C Leff", October 24, 1969–January 18, 1970, Pittsburgh, no. 218