Monatshefte für Mathematik
(Springer) IF2017: 0.735
Established in 1890 by E. Weyr et al. Formerly (till 1940 (?))
Monatshefte für Mathematik und Physik. Interrupted around 1944.
Springer
all issues
[Ostrava; USP; TTU; Iceland - newer issues]
Euler's Library: till 2007
Library Genesis
all issues with gaps [(41(1934),343-) is missing]