Transcribe Frick / Art Purchase Files/ Voucher from H.C. Frick to M. Knoedler & Co. for payment toward Velazquez's "Portrait of Philip IV," 14 March 1911 [front] Voucher from H.C. Frick to M. Knoedler & Co. for payment toward Velazquez's "Portrait of Philip IV," 14 March 1911 [front] Needs Review