Mme. Slapoffaski (nee Neilson)

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This rather homely woman is a singer such as one seldom hears outside of grand opera. She is by far the best dramatic soprano that ever entertained vaudeville. Her singing was a revelation to the audience and even the gallery appeared to be charmed by the grandeur of her voice. 12 in one.
Source:
University of Iowa, Keith-Albee Vaudeville Collection, Manager Reports, 28 November 1904-28 August 1905