St John and Grein adapted the work from the Dutch of Herman Heijermans
: Op Hoop van Zegen (1900). Besides Heijermans, she translated from the French of Isi Collin
and the Spanish of José Echegaray
.
Nicoll, Allardyce. English Drama, 1900-1930. Cambridge University Press, 1973.
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Matthew, Henry Colin Gray et al., editors. Oxford Dictionary of National Biography. http://www.oxforddnb.com/.