The collection is arranged into three series. The first series, Black and White Prints, consists of pictures taken during two time frames: Sieber's first trip to Nigeria in 1958, and his later trips to museums from 1971 to 1973. This series retains Sieber's original order of letter groups which were assigned by Sieber and his assistants when placing the prints on index cards. Some of these letters refer to the ethnic group depicted: for example, G seems to refer to the Goemai people, as many of the photos in that group were taken of Goemai communities. This is also true for I, for Igala, ID, for Idoma, and J, which refers to the Jos Museum in Nigeria. It is not clear what the K, L, and N labels are intended to represent.The photos are almost entirely of material artwork, including masks, figurines, doors, tables, and more, and are labeled according to film roll and photo number, ethnic group, village name, and geographic region. The non-museum photo sets alternate between photos of objects by themselves and the objects in use in dances and village celebrations. 1971 and 1973 refer to the dates when Sieber took the photographs in those sections, which were almost entirely taken in museum settings in the United States. A small number of photos following the 1973 group are labeled miscellaneous, and these are also photos of artwork in various museums.

The second series is Slides, Videos, and Audio Recordings, and contains slides of pictures taken of African art in European museums and paintings from Frederick Catherwood, as well as an exhibit program, a video disc and two audio discs pertaining to other exhibitions of African culture and art. The third series, Bibliographic Materials, contains two copies of a set of bibliographic surveys covering the art and culture of African peoples compiled by various scholars.