Does anyone know how common it was for Russian Jews to immigrate to a
country in eastern Europe, such as Poland or Romania, before finally
immigrating to the USA (around the 1890's)?

You can respond privately.

Thanks,

Steve Gabai

Searching:

Russia/USA - GREENBERG, GREENBAUM, SCHRAPATZ - SCROPOTICH, RATOVETSKY &
SILVER
Canada - GREENBERG
Albany/Troy, NY - GREENBERG
Italy/Turkey/USA - GABAI, ALGRANATI, ABOUAF, ROUSSO - RUSSO, CARMONA &
TARANTO,
Argentina - ALGRANATI