Henryk Grossman was a Polish economist, historian, and Marxist revolutionary active in both Poland and Germany.
Henryk Grossman
Jewish Social Democratic Party in Galicia
The Jewish Social Democratic Party in Galicia was a political party in Galicia and later also Bukovina, established in a split from the Polish Social Democratic Party of Galicia (PPSD) in 1905. The party made its first public appearance on May 1, 1905, with separate May Day rallies in Kraków, Lemberg, Tarnów and Przemyśl. However, as the new party stressed that it was not a competitor of the existing Social Democratic parties, they later joined the PPSD celebrations.
First convention of Jewish Social Democratic Party - Lemberg, 1905