Sheet music
Parts
Manuscript, n.d.
Publisher
Manuscript, n.d.
Misc. Notes
color . Actually, fairly clearly a holograph -see p.1 of the viola part with its crossouts - so having some idea as to its dates so that century can be estimated (and "MssAu" without a date can be avoided, to avoid "Holographs from the 0th century" nonsense) would be useful... (otoh his piano fantasy op.33 was published in 1909, so 20th century seems at least possible.)
Copyright
Manuscript, n.d.
Publisher
Manuscript, n.d.
Misc. Notes
color . Actually, fairly clearly a holograph -see p.1 of the viola part with its crossouts - so having some idea as to its dates so that century can be estimated (and "MssAu" without a date can be avoided, to avoid "Holographs from the 0th century" nonsense) would be useful... (otoh his piano fantasy op.33 was published in 1909, so 20th century seems at least possible.)
Copyright