Where might we locate the mentioned records? Jews baptized in Poland #poland

Our Jewish Family History Research

Hello all:
Please see that attached link which
gives insight into the history of Jacob Frank and his followers the Frankists, Jews baptised in Poland. There is mention that by 1790, 26,000 Jews were recorded baptised in Poland. Does anyone know if those records are accessible?  Many thanks in advance.
Jacquie Gruszecki

Researching GRUSZECKI,GRUSZECKA from various areas of Poland

Jacob Frank

Where might we locate the mentioned records? 

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