From the Schubert Club Archive:

Flyer promoting Demus’ 1982 concert at the O’Shaughnessy
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Article in Schubert Club’s monthly newsletter promoting Demus’ 1982 concert, which featured two keyboards from Schubert Club’s historical keyboard collection
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Program from the 1982 concert
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Review in the St. Paul Dispatch of Demus’ 1982 performance
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