The correspondents are:
File 1: Pacific View 5th grade class, Mr Joachim Paepcke, Don N Page, George E Palade, Pantheon Books, Kurt Papenfus, Mr Juan Antonio Paricio Cardona, Jong H Park, Prof Andrew Parkinson, Mr Stephen Parks, Flavio Parmiggiani, Prof James W Patrick, Mr Graham Patterson, Ms Anne S Paul, Dr Eraldo Paulesu, Dr Crellin Pauling, Peter Pauling, Dr Alex Pavlak, Dr Thoru Pederson, Ms Betty Pemberton, Daniel Pendick, Sir Roger Penrose, Dr Max F Perutz, Doris Peters, John Pettigrew, Jean A Phillips, M Piattelli Palmarini, Vernon R Pickles, Dr George Pieczenik, Jonathan Piel, Didier Pinault, and Dr Zhang Ping.
File 2: Lawrence R Pinneo, Dr Felix E Planer, Mrs Judith Plowden, Fred Plum, Markus Pöessel, Tomaso Poggio, Prof Daniel A Pollen, Dr Chi-Sang Poon, O'Neil A Porée, Prof Lord Porter, Huntington Potter, Prof Van Rensselaer Potter, Dr Alexandre Pouget, Dr Mary A Powers, Dr Charles C Price, Mr Sol Price, Mark Ptashne, and Rosendo Pujadas.
A letter detailing sensitive personal circumstances has been extracted to files PP/CRI/J/1/4/23.