"American philanthropist" . "Theodore Pitcairn (1893\u20131973), son of PPG Industries founder John Pitcairn, was an art collector and philanthropist, and a minister in the General Church of the New Jerusalem.Pitcairn purchased two paintings by Vincent van Gogh from the Montross Gallery in 1920."@en . "Pitcairn, Theodore"@en . "1973Z"^^ . "1893Z"^^ .