For Naturalizations, if you find a Naturalization Petition on Ancestry view the image then look at the immediately preceding images by selecting the left arrow on the left side of the image.  You may have to go back a few images, but sometimes there is a Certificate of Arrival that gives the name the person used when entering the country.
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Michael Herzlich
Delray Beach, Florida USA

Belarus - EPSTEIN, HELFAND, POLLACK
Galicia (Poland, Ukraine) - HERZLICH, TREIBER