Below are essays that Dr. Clarke wrote about African Chiefs which appeared in the Pittsburgh Courier. Members of the Cornell University community may click on the link to access the essays (full text).
- Famous African Chiefs: El Hadj Thami PASHA OF Pittsburgh Courier, September 7, 1957: 1.
- El Hadj Thami El Glaoui PASHA OF MARRAKESH Pittsburgh Courier, September 14, 1957: B1.
- Famous African Chiefs: COURIER EXCLUSIVE OSEI TUTU OF Ashanti Pittsburgh Courier, September 21, 1957: A14.
- Famous African Chiefs: JA JA OF THE IBOS Head of the House of Anna Pepple Afterwards Known as Jo Jo of Opobo [Part 1] Pittsburgh Courier, October 5, 1957: SM1.
- Famous African Chiefs: JA JA OF THE IBOS Head of the House of Anna Pepple Afterwards Known as Ja Ja of Opobo [Part 2] Pittsburgh Courier, October 12, 1957: C1.
- Famous African Chiefs: Kwaka Dua III King Prempeh of Ashanti [Part 1] Pittsburgh Courier, October 19, 1957: SM1.
- Famous African Chiefs: Kwaka Dua III King Prempeh of Ashanti [Part 2] Pittsburgh Courier. October 26, 1957: B1.
- Famous African Chiefs: NANA SIR OFORI ATTA Omanhene (Paramount Chief) of Akim Abuakwa Pittsburgh Courier. November 2, 1957: B1.
- Famous African Chiefs: Samory, the Mandingo Called the Black Napoleon of the Sudan Pittsburgh Courier. November 9, 1957: B6.
- Famous African Chiefs: Kon-Do, Son of Gle-Gle Later Known as Behanzin Hossu Bowelle King of Dahomey Pittsburgh Courier. November 16, 1957: B3.
- Famous African Chiefs: Chaka of the Zulus Pittsburgh Courier. November 23, 1957: B6.
- Famous African Chiefs: Dingaan: Chaka's Successor Pittsburgh Courier, November 30, 1957:50
- Famous African Chiefs: Cetewayo, Nephew and Disciple of Chaka Pittsburgh Courier, December 7, 1957: B6.
- Famous African Chiefs: Lobengula of the Matabele [Part 1] Pittsburgh Courier, December 14, 1957: B1.
- Famous African Chiefs: Lobengula of the Matabele [Part 2] Pittsburgh Courier, December 21, 1957: B1.
- Famous African Chiefs: Moshesh of the Basutos [Part 1] Pittsburgh Courier, December 28, 1057: B6.
- Famous African Chiefs: Moshesh of the Basutos [Part 2] Pittsburgh Courier, January 4, 1958: B6.
- Famous African Chiefs: Sechele of the Bakwena [Part 1] Pittsburgh Courier, January 11, 1958: B7.
- Famous African Chiefs: Sechele of the Bakwena [Part 2] Pittsburgh Courier, January 18, 1958: B22.
- Famous African Chiefs: Bambata of the Zondi Last of the Zulu Rebel Chiefs Part 1 Pittsburgh Courier, January 25, 1958: B6.
- Famous African Chiefs: Bambata of the Zondi Last of the Zulu Rebel Chiefs Part 2 Pittsburgh Courier, February 1, 1958: B6.
- Famous African Chiefs: Tshekedi, Son of Khama [Part 1] Pittsburgh Courier, February 8, 1958: B4.
- Famous African Chiefs: Tshekedi, Son of Khama [Part 2] Pittsburgh Courier, February 15, 1958: B6.
- Famous African Chiefs: Khama of the Bamangwato Pittsburgh Courier, February 22, 1958: 54.
- Famous African Chiefs: Seretse Son of Sekgoma And Last of the Khama Chiefs [Part 1] Pittsburth Courier, March 1, 1958: B5.
- Famous African Chiefs: Seretse, Son of Sekgoma And Last of the Khama Chiefs [Part 2] Pittsburgh Courier, March 8, 1958: B6