Missionaries
| Johanna Veenstra [1894-1933], Pioneering for Christ in the Sudan. London & Edinburgh: Marshall Brothers Ltd., [1926]. Hbk. pp.190. |
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| Johanna Veenstra [1894-1933], Black Diamonds. 1929. |
| Henry Beets, Johanna of Nigeria. 1937. | |
Eugene Rubingh , "Veenstra, Johanna," Gerald H. Anderson, ed., Biographical Dictionary of Christian Missions. Grand Rapids, MI: Cambridge, UK: Eerdmans, 1988. Pbk. ISBN: 0802846807. p.697. |
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| Eva Suary Watt, Aflame for God. 1937. | |
| Gerald L. Zandstra, Daughters Who Dared. 1992. |