From NPR’s Talk of the Nation:
 

Identical twins Paula Bernstein (left) and Elyse
Schein were adopted as infants and raised separately. It was not until
they were 35 years old that the two sisters learned of each other.

Strangers Become Sisters as Twins Reunite

October 25, 2007 ·
Separated in infancy and given up for adoption, Elyse Schein and Paula
Bernstein grew up unaware that they had an identical twin. Their new
memoir, Identical Strangers, chronicles their story of separation, reunion and identity.

Records
from the adoption agency indicate that the identical twins’ separation
and adoption placement in the late 1960s was connected to a
psychological study investigating the effects of nature versus nurture.

read the rest or listen to the program here