LEO ROZENTSVAYG (1869-December 20, 1916)
He was born in Botoșani, Romania, descended from a poor family. He received a traditional education. In 1891 he made his way to the United States. He engaged in a variety of difficult labors, eventually attaining the professor of lawyer, and through great industriousness acquired a great breadth of learning in natural science, especially in physics. He took up socialist work, and over the years 1902-1903 he was general secretary of the Workmen’s Circle. He published scientific and socialist articles in Tsukunft (Future) and Forverts (Forward) in New York, among other serials. In New York he brought out a series of books and pamphlets opposing religion: Sotsyalizmus in beys hamedresh (Socialism in the house of prayer) (1902), 59 pp.; Der alef-beys fun sotsyalizmus (The ABCs of socialism); Mayse breyshes (The story of creation); Bris mile (Circumcision) (1916), 141 pp. The booklet Eyn ershter may (One May First) (Tarnopol, 1896) may be his work. He died in New York.
Sources: Zalmen Reyzen, Leksikon, vol. 4; Yeshurin archive, YIVO (New York).