Pelong ya Ka, a collection of essays and sketches in Sotho was first published in 1962 in the Bantu Treasury Series imprint of Witwatersrand University Press. S. Machabe Mofokeng is regarded as one of the greatest essayist and dramatist in Southern Sotho. His first book, Senkatana (a play) was published in 1952.
Pelong ya Ka comprises 20 essays which range from meditative, descriptive, and narrative to polemic style, with the tone of voice characterised by melancholy, humour, and satire. The essays span over a wide range of themes, as suggested by their titles, e.g. Pelo (The heart), Bodutu ('Solitude'), Death ('Lefu'), Nako ('Time'), Pampiri ('Paper'), Ho kganna mmotokara ('Driving an automobile'), Sepetlele ('Hospital'), Lenyalo ('Matromony'), and Boqheku ('Old age'). Nhlanhla Maake says of this collection "Mofokeng's essays fuse simplicity with dept." Pelong ya Ka is part of the African Treasury Series published by Wits University Press.

Sophonia Machabe Mofokeng (1923–1957), a dramatist and prose writer, received a PhD from the University of the Witwatersrand, Johannesburg, for his research on African folklore, and his knowledge of Sesotho culture was the source of his dramatic reworking of the Senkatana legend.