To be safe from prying eyes, Graham used an underground bunker in the backyard of his ranch in San Diego, California. He then set about sourcing the cleverest sperm and managed to convince three Nobel Prize winners to donate. One of them was William Shockley, a notorious racist. Accused of being a Nazi, Graham got slammed in the press. His other donors left him and his dream was nearly destroyed. Despite this the clients came flocking.
In the end, the Repository was in operation for 20 years – and responsible for the birth of 217 children. (Excerpt from bbc.co.uk)