||Holograph manuscript, 1915.
||Passacaglia in Fa diesis minore ; Passacaglia (fis moll) Für Orgel
Issued in reprints of the Hansen edition of 1918 and in new editions between then and 2010 (Macinanti's edition for Edizione Carrara of Bergamo) or even more recently, judging from Worldcat; would seem to be one of Merikanto's more often published works? - ES
(See also? Hofmeister's Monatsbericht (1919), p.53.)