- $268.00Original Portrait Digital by Ralph Peter Mueller | Figurative Art on Paper | EvilSaatchi Art
- $150.00Original Cartoon Printmaking by Ralph Van Horssen | Digital Art Art on Paper | GarfieldSaatchi Art
- $5.59Wreck It Ralph Invitation Birthday Party Digital Printable FileEtsy
- $25.35Detection Theory : Applications and Digital Signal Processing by Ralph D. HippenstielBetter World Books