| William Notman Alexander Henderson, Magnesium-lit Experimental Portrait, Montreal, QC, 1864-1865 1864-1865 Albumen print 8.5 x 5.6 cm McCord Stewart Museum Purchase, funds graciously donated by Maclean’s magazine, the Maxwell Cummings Family Foundation and Empire-Universal Films Ltd., Accession Number: N-0000.1956.7.1.2 LL/125838
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