| Part I: Part I: Concertos before 1820 (199 compositions); | | Number of titles | 1 | | Number of microfiches | 259 |  | | Part II: Orchestral Music before 1820 (372 compositions); | | Number of titles | 1 | | Number of microfiches | 427 |  | | Part III: Church Music, 1750-1820 (303 compositions); | | Number of titles | 1 | | Number of microfiches | 541 |  | | Part IV: Vocal and instrumental tutors (398 works); | | Number of titles | 1 | | Number of microfiches | 811 |  | | Part V: Historical Organ Collection : The Bätz Archive (approx. 440 technical and decorative drawings); | | Number of titles | 1 | | Number of microfiches | 67 |  | | Part VI: Vocal Music, 1650-1820 (311 compositions); | | Number of titles | 1 | | Number of microfiches | 609 |  | | Part VII: Keyboard Music, 1620-1820 (449 compositions); | | Number of titles | 1 | | Number of microfiches | 326 |  | | Part VIII: Music for Solo Instrument, 1600-1820 (404 compositions) | | Number of titles | 1 | | Number of microfiches | 361 |  | | Part IX: | | Number of titles | 1 | | Number of microfiches | 479 |  | |
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