“Interesting Statistics of the Colored Race”, Arizona sentinel and Yuma weekly examiner (Yuma, Arizona, USA), Thursday, 9 May 1912, page 2, column 3.
Montrita la 10-an februaro 2013. ↑ angle “Interesting Statistics of the Colored Race” Arizona sentinel and Yuma weekly examiner (Yuma, Arizono, Usono), ĵaŭdo, la 9-an majo 1912, pp. 2, kol.WikiMatrix WikiMatrix