During her stay in
Machakos,
Kenya, Trowell carried out research on art and the artistic ability of the Kamba people which led to writing her first book,
African Arts and Crafts, published in 1937. As an advocate for formal art education, Trowell promoted the establishment of the School of Art at
Makerere University in 1937. This was meant to be an exhibition of her students' artworks as well as showcasing artefacts from East, Central and West Africa. Baskets, mats, masks, sculptures, and paintings and was celebrated as the "first exhibition of African art" in Uganda. Funded by the colonial administration in 1939, the exhibition subsequently toured
London where it was hosted at the Imperial Institute South Kensington, as the "Exhibition of Ugandan Arts and Crafts". In 1942, the collection was relocated to the Margaret Trowell School of Fine Art and Trowell then served as the honorary curator until 1945. While the collection was still housed at the Margaret Trowell School of Fine Art, she along with
Klaus Wachsmann, supervised the collection of information and published a catalogue –
Tribal Crafts of Uganda – that listed the materials in the ethnological collection. == Personal life ==