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In page Yevonde Middleton:

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This highly creative period of Yevonde's career would only last a few years. At the end of 1939, Colour Photographs Ltd closed, and the Vivex process was no more. It was the second major blow to Yevonde that year—her husband, the playwright Edgar Middleton, had died in April.[1] Yevonde returned to working in black and white, and produced many notable portraits.[citation needed] By the mid-1960s, the importance of both her work and that of other experimental British photographers of the 1920s and 1930s had largely been forgotten.[7] However, there was a revival of interest in her work after this was the subject of an exhibition at the National Portrait Gallery in 1990.[8]