The Klafsky-Verzeichnis (Klafsky Catalogue) is a thematic-chronological catalogue of choral compositions by Michael Haydn, compiled by Anton Maria Klafsky in 1925.
I. Messen
Missa in hon. B.mae Trinitatis, D major. 1754 MH 1
Missa Sti. Cyrilli et Methodii, C major. 1758 MH 13
Missa dolorum B. M. V. key? 1762? 1794? MH 57 [552]
Missa St. Nicolai Tolentini in usum R. R. P. P. Augustinorum. C major. 1771 MH 109, 154
Missa S. Gabrielis, C major. Salisb. 7 Nov. 1768 MH 112
Missa de St. Raphaele, C major. 7 Nov. 1768 MH 111
Missa longa in hon. S. Josefi. 1771 MH 16
Requiem in C minor. 1771 MH 155
Missa Solemnis de St. Ioanne Nep. 1772 MH 182
Missa St. Amandi, C major. 4 Sep 1776 MH 229
Missa S. Hieronymi, C major. 14 Sept 1777
Missa St. Aloysii, B-flat major. 21. XII. 77
Missa in hon. S. Ruperti, C major. 11 VIII 82
Missa in hon. S. Dominici, C major. 1786
Missa in h. S. Gotthardi, C major. 19 XII 92
Missa S. Crucis in Contrapuncto, A minor. 1792 (?)
C. H. Sherman and T. D. Thomas, Johann Michael Haydn (1737 - 1806), a chronological thematic catalogue of his works. Stuyvesant, New York: Pendragon Press (1993): 383