Front Panel Diagram for Rutt/Etra Video Synthesizer. unknown, undated.

Rutt Etra Diagram., undated.

Rutt/Etra Video Synthesizer Systems. New York, NY: Rutt Electrophysics, undated.

Sales Brochure for Rutt/Etra Systems., undated.

Text from a Sales Brochure., undated.

Rutt Etra User's Manual. NY, NY: Rutt Electrophysics, undated.

Rutt Etra Model RE 4A and RE 4B Operator's Manual., undated.