I am researching someone in the 1858 Litvak census.  It says he was 13 years old in the previous revision date 1858.  What was the date of the previous revision?

Thanks.
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Bob Silverstein
bobsilverstein@...
Elk Grove Village, IL

Researching Kaplan (Krynki, Poland) Tzipershteyn (Logishin, Pinsk, Belarus), Friedson/Fridzon (Pinsk, Cuba, Massachusetts), Israel and Goodman (Mishnitz, Warsaw, Manchester).