The repository has left an information vacuum because the people who know about it have died or clammed up. Repository founder Robert Graham died in 1997. Dora Vaux, the repository office manager and the person who may have known most about donors and clients, died last year. Graham's widow, Marta Ve Graham, is retired and has declined several interview requests. Robert Graham's son Robin, who managed his father's company, says neither he nor any of his brothers and sisters ever paid much attention to the sperm bank. I can't locate Anita Neff, the repository's last director, or Frank Andersen, the repository's final medical officer. And Eric Kimble, who headed Graham's Foundation for the Advancement of Man, first agreed to be interviewed but has not returned repeated follow-up phone calls and faxes.