October 16, 2023
Dear Nathaniel,

a) Attached is a letter in your name, ready to be e-mailed by you to the Österreichische National Bibliothek.

b) Their web page has an English version, suggesting that they are fluent in English, and that you my write to them in English, if you wish.

c) If you wish the correspondence to be in my name and from my e-mail address, please let me know.

d) By replacing with suitable address and by deleting the words "und des Katalogs Ihrer Bibliothek" this letter may be sent to any of the archives of sheet music listed on the Internet.

You are probably aware of https://www.onb.ac.at/carolina/carolina.htm which contains scores of 415 baroque Italian operas, but none by Cartellieri.  All I could find on the Internet by Cartellieri are a libretto for an oratorio: Per celebrare la festività del S. S. Natale https://digital.onb.ac.at/RepViewer/viewer.faces?doc=DTL_4744220&order=1&view=SINGLE <<Il>> secreto. Farsa per musica. Dall'originale francese di Hoffmann. Trasportata in italiano, e ridotta all'uso della scena musicale da Luigi Prividali. Con musica del maestro Antonio Cartellieri (etc.) Hoffman, Francois-Benoit [VerfasserIn]; Cartellieri, Antonio Vienna: Degen, 1805. - 34 S.  and Cartellieri, Casimir Antonio, 1772-1807 https://digital.onb.ac.at/OnbViewer/viewer.faces?doc=ABO_%2B158630900 the score for 3 Divertimenti for woodwinds in F
 
Love, Jochen