Sarkes Tanzian Inc. PDA-VDA Broadcast Equipment Division. Verticle Interval Switcher VIS-88. Operation and Maintenance Manual 100-492-1. Bloomington, IN: Sarkes Tanzian Inc., 1967.

Sarkes Tanzian Inc. PDA-VDA Broadcast Equipment Division. Pulse Distribution Amplifier 85-341, Video Distribution Amplifier 85-182. Instruction Book 100-365.. Bloomington, IN: Sarkes Tanzian Inc., undated.