[1] Kantorovitch continued to teach at various Workmen's Circle schools in Baltimore, Waterbury, Newark, and New York City.
[2] While in Baltimore he published his first English-language article, "The Rise and Decline of Neo-Communism," a critical analysis of Communism and the Russian Revolution of 1917.
Calverton, was so impressed with Kantorovitch and his ideas that he was made an Associate Editor of the magazine, to which he frequently contributed.
At the end of 1931 Kantorovitch joined forces with two teachers at the Rand School of Social Science, Anna Bercowitz and David P. Berenberg, as a founder and co-editor of the American Socialist Quarterly, a magazine dedicated to socialist theory and in depth analysis of current questions of policy.
The magazine would gain official status as the theoretical journal of the Socialist Party of America during its second year of publication.
Although in ill health throughout his life with chronic tuberculosis, he continued to write for The Call and The American Socialist up to the time of his death.
Haim Kantorovitch died on August 17, 1936, at a sanitarium operated by the Workman's Circle in Liberty, New York.
Kantorovitch's colleague David Berenberg eulogized his co-worker in an article published shortly after his death: "After the death of The Class Struggle [in 1919], an interim of ten years followed during which the Socialist Party had no English publication other than the daily and weekly propaganda papers.
Few, apparently, felt the need for something more substantial... For some years the writer cast about among his friends in the party in the hope of finding those few whose enthusiasm could be concretized into action.
In his last days he summoned up the remnants of his strength to write for it an article of pungent warning to that party for which he was giving up his life.