Crystals Make Pearce-SimpsonE.B. Lewis Co. Pair of CB Channel 18 Transmit & Receive Crystals manufactured by the E.B. Lewis Company for Pearce-Simpson. Manufacturer stamped side. Pair of CB Channel 18 Transmit & Receive Crystals manufactured by the E.B. Lewis Company for Pearce-Simpson. Vendor stamped side. Pair of CB Channel 18 Transmit & Receive Crystals manufactured by the E.B. Lewis Company for Pearce-Simpson. End.