In 1911 he published a romantic poem Esterke about a legendary romance of Polish king Casimir III the Great and daughter of a Jewish blacksmith, that gained him a further recognition and acclaim.
[1] After the Lemberg pogrom in November 1918, he traveled to Vienna and joined a group of Jewish authors and continued to write and edit.
There, along with other neo-romantic Yiddish poets such as Ravitch, Melech Chmelnitzky, Dovid Königsberg [Wikidata], and Uri Zvi Greenberg, Imber formed the group known as Young Galicia, that began to merge traditional poetry with modern formal experimentation popular in Vienna.
[2] In 1923–1928 he lived in USA, where he redacted a political and literary magazine Di Gegenwart, and an anthology Modern Yiddish Poetry (latin transcription; New York, 1927).
His polemic journalist work, mostly about rising antisemitism in Poland, was published in books Asy czystej rasy (Pure-breed Aces, 1934) and Kąkol na roli (Corncockle on the Field, 1938).