Torino: "Augusta" Edizioni Musicali, .
No longer PD-US-only as of 2016. This file is part of the Sibley Mirroring Project. Published in 1948.
Edit: that site is down but his descendant J. Neglia has a list of works for FP Neglia here.
Op.13, whatever its form (suite?) and instrumentation, may have been published in the 1910s like op.14 (composed in 1900 (and published in or by 1912, the latter - Hofmeister's Monatsbericht (1913), p.3- that, at least, one could probably upload.)).
Problem 2: Arranger's name found: Renzo Bossi, died 1965. ... erm, ow. PD-US-only if at all. - only until 2015.
The regular "Op.13" is Der Mensch ist ein Lüftchen, a song composed in 1901.