The European colonial masters discovered that Nigeria had a high rate of adult illiteracy and thus launched the first Mass Literacy Campaign in 1946. Efforts at combating the scourge of high rate of adult illiteracy by government, non-governmental and voluntary organizations, Unesco and other bodies to promote adult literacy education in Nigeria, did not yield any appreciable results. Open fields, market places etc., were used as literacy centers to reach and teach the illiterates how to read and write in the printed word. The main problem affecting the effective promotion of adult literacy education in Nigeria, is that of the withdrawal of participants from the literacy centers after the initial enrolment. From the research conducted and being reported in this paper, some community museums in Ekiti, Ondo and Osun states of Nigeria, were used as literacy centers to complement the conventional literacy centers of the government and other agencies. Between 2000 and 2010, a total enrolment in the conventional literacy programme in those three states in Nigeria, was 37,648 with only 8,467 (22.5%) sustained to a nine month annual literacy graduation. But at the museum literacy centers in the three states, a total enrolment of 4,084 from which 3,857( 94.4%) participants were sustained. It is therefore seen that the community museums could be a valuable literacy center and thus recommended its use and integration as effective sources for promoting adult literacy education in Nigeria.