Secondary sources informing this site[1] have been categorized as published works of colleagues, comrades, and ideological partners.  These are not hard and fast categories they merely serve as tools to display the proximity that various authors and chroniclers had to Nkrumah and Nkrumahism.  Of the secondary sources, information is ranked in importance from the ideological partner to the comrade to the colleague.  In this way the information source moves from inner to outer circles.  The testimonials and writings of ideological partners helped to ascertain the impact of Nkrumahism on other key agents. 

 A note of caution must be made concerning the secondary sources.  The world that Nkrumah participated in was full of intrigue and violent opposition.  Many close colleagues, comrades, and ideological partners became enemies to Nkrumah.  They made contributions during the time of their collusion with him.  Two persons that were once closely related to Nkrumah as ideological partners and then later classified as opposition were Tawia Adamafio and Alexander Quaison-Sackey.  Even Nkrumah's extra-Ghanaian partners, Sékou Touré, Modibo Keita, and Abd Al-Nasser did not always agree with his positions.  This latter group, however, never opposed Nkrumah violently and in the case of Touré the camaraderie was genuinely familial. 

One requirement for inclusion into the secondary source level was active participation in similar or the same endeavors as Kwame Nkrumah.  Authors that were colleagues were not necessarily as close to Nkrumah as authors that were comrades.  The former category included persons such as Erica Powell, Geoffrey Bing, and Major-General Alexander, all of whom worked first with the British Colonial government and then in Nkrumah's government.