Hello, I'm Your Sister. Our Father Is Donor 150.

From The New York Times:

Like most anonymous sperm donors, Donor 150 of the California Cryobank will probably never meet any of the offspring he fathered through sperm bank donations. There are at least four, according to the bank's records, and perhaps many more, since the dozens of women who have bought Donor 150's sperm are not required to report when they have a baby.

But two of his genetic daughters, born to different mothers and living in different states, have been e-mailing and talking on the phone regularly since learning of each other's existence last summer. They plan to meet over Thanksgiving.

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