ISKCON-Delhi – Srila Bhaktisiddhanta Sarasvati Thakur Appearance (Album with photos)
Srila Prabhupada: There are two ways of association—by vani and by vapuh. Vani means words, and vapuh means physical presence. Physical presence is sometimes appreciable and sometimes not, but vani continues to exists eternally. Bombay, November 10, 1974.
Find them here: https://goo.gl/Xf7D6a