Nick Evans is an authority on Migration >from Eastern Europe .He has written
on Emigration >from Latvia to England and also to America.

3 of his papers are available online

https://www.tandfonline.com/eprint/V8X5YXCCPMBG73BGTMKQ/full
[Port Jews of Libau]

https://www.tandfonline.com/eprint/KPBZCRGJTJWJNYTQCITJ/full
[Shipping Jews across the Atlantic]

https://www.tandfonline.com/eprint/cRVUmqya8GQenk3e6PZg/full
[Indirect migrants via England] This is a work in progress.

Arlene Beare UK
Dorfman Birzai Lithuania then Riga , Sher Pandelys Lithuania then Riga,
Bloom Pandelys Lithuania then Riga, Berman Lygumai Lithuania then
Jekabpils Latvia.
Trzmil (Samuels) Zychlin Poland, Kohn Zychlin Poland possibly also
Bialystock