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Bressan F Alto Recorder (colecc. Frans Brüggen), F. Morgan 1979
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Bressan F Alto Recorder, cabeza (colecc. Frans Brüggen), F. Morgan 1979
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Bressan voice flute, pie (colecc. Frans Brüggen), F. Morgan 1979
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Denner, dibujo de Von Huene
- Denner (Copenhagen), F. Morgan1980
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Alto J.Pörschmann (Leipzig), T. Bregstrøm 1997
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Rosenborg Castle, F. Morgan 1982
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Steenbergen F Alto Recorder (colecc. Frans Brüggen), F. Morgan 1978
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Functional Diagram of the Inner Bore of a Baroque Recorder, H.Moeck (Recorders: hand-made and machine-mad)