Contributor
- Pharies, Hugh J.1
- Pickett, Wilson1
- Pittsburgh Plate Glass Company1
- Pössinger, Franz Alexander1
- Raia, Carl1
- Ramirez, Oswaldo V.1
- Rathbun, Joan N.1
- Rationalist Press Association1
- Reedy, Tina1
- Reese, Bob1
- Reese, Gary1
- Renteria, Belinda1
- Reschke, Claus1
- Rincón, Manuel1
- Rios, Miguel Angel1
- Riva Palacio, Mariano1
- Rogers, Emma W.1
- Rolla, Alessandro1
- Rosen, Herbert1
- Rowland, Helen1