Grand Instrumental and Vocal Concert given by Signor G. De Grandi Violinist Heinrich Klingenfeld is misidentified in the printed program as "K. Klingenfeld". Keillor, Elaine. "Heinrich Klingenfeld". The Canadian Encyclopedia. Toronto: Historica Canada, 2006. Web. 8 Feb 2006. student performance multiple performances 1901-04-26T20:15:00