He was a contributor and for a time editor of the colonists’ newspaper in Argentina: Der yudisher kolonist (The Jewish colonist). It appeared in the colony of Dora (1909-1912). In 1910 he published in it a stinging article against YIKO (Jewish Cultural Organization).
His brother MOYSHE PUSTILNIK was also for a time a contributor to the same newspaper.
Sources: Sh. Rozhanski, Dos yidishe gedrukte vort in argentina (The published Yiddish word in Argentina), vol. 1 (Buenos Aires, 1941), p. 92; Y. Botoshanski, Mame-yidish (Mother Yiddish) (Buenos Aires: Dovid Lerman, 1949), p. 172; P. Kats, Geklibene shriftn (Selected writings), vol. 1 (Buenos Aires, 1946).