English: Bartlett and Robertson were a husband-and-wife classical piano duo who were credited with popularizing two-piano music in Europe and the United States in the 1930s and 1940s through their extensive touring, recordings, and radio performances. Guess at 1945 as date of sig.
This signature is believed to be ineligible for copyright and therefore in the public domain because it falls below the required level of originality for copyright protection both in the United States and in the source country (if different). In this case, the source country (e.g. the country of nationality of the signatory) is believed to be United Kingdom.
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