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U-shaped concealed binaural beard receptor with eartips made of vulcanite. A thin hallow receptor with a long narrow opening and 28 small holes made out of metal rests under the beard and connects to the ears via flexible rubber tubes. There are springs inside the rubber tubes to allow the user to insert the eartips. Could also be worn under a scarf or tie.

Folding Dentaphone, American Dentaphone Co. Folds to 4" width

Rhodes Audiophone device consisting of two parts, made of vulcanite, string threaded through both pieces, shaped in a square fan design with a handle. User would hold one piece to the mouth, between the teeth and the second piece with the other hand on the lap. Sold for $4.00.

Acousticon model to be used as body aid or tie bar, metal, gold in color, two stars and circle design engraved on front, on/off switch and volume control switch on sides, one cord and one receiver.

Manufacturer unknown. No date. One small brown barrette with clip on back to secure to hair, with one cord leading to a receiver for the ear.

Wooden and metal walking stick trumpet device. 3 feet long with wood and metal components with a metal tip. Handle consists of the receptor with protruding and adjustable earpiece to the side. Grillwork on the receptor opening consisting of 6 holes.

Black metal London dome trumpet with large, 8.5 inches wide, mouthpiece/receptor. The receptor has a flowered scroll design, 6 petals, with one center, in the interior. One curved tube along the side of the receptor continues and opens in the apex of the receptor. A curved handle leads to the earpiece along the side of the receptor allowing the receptor opening to be held towards the speaker. The device weighs approximately 2 pounds.

One wood box with detailed instructions on inside lid. Box contains numerous knobs and other mechanical workings along with a stethoscope-like device that attaches to ears and end round end piece that was used to massage any part of the body. The device claimed "adapted to treat diseases of the ear.".

Believed to be only one of its kind made according to Goldstein. Intended for use on a table or desk and collects soundwaves from all parts of the room. Black metal (heavy) box containing 32 square metal cubicles leading to a central receptor on the verso side. The receptor is connected with an outlet pan with a cloth covered long tube (too fragile to measure) and earpiece.

One gold metal bouquet holder, dome-like in shape, with gold grillwork on the front. Tube leads to the eartip which is made from vulcanite. The device was worn on the front of a dress and concealed by lace or other trimming.

One gold-plated silver metal concha device made to fit an individual's ear. The receptor opening is a decorative filigree grillwork. The reverse side of the device shows a carved shell shape.

Aurolese phones headband device with the "barrel" pattern. Thin black metal headband device with two ribbed silk covered receptors shaped like mittens to fit over the ears with protruding vulcanite eartips. Made for women.

Aurolese phone headband with two black metal trumpets with vulcanite tips. Earpieces are soldered into the trumpet parts. Made to be worn around the base of the neck as opposed to the top of the head.

One black metal hallow hair receptor covered in faille and fits over the top of the head and directs sound through the top of the 13 inch opening and then through the tube and into the ear. The bouffant hair style of the period allowed hair to be arranged on top of the aid thus concealing the device.

One table top model, dark brown metal, with a microphone built into the unit, and comes equipped with earphones. Pitch and loudness controls on top and a special switch on the side that allows for normal or hi-cut pitch adjustment.

One round silver metal apparatus with wind-up mechanism on one side, along with a shiny protruding volume control and a nipple type extrusion on one end. Designed by R. Barany as a noise maker device to mask or eliminate the contralateral ear during a monaural hearing test. The wind up mechanism produces a whirring sound that can be controlled by the volume button with the nipple extrusion inserted into the canal of the contralateral ear during a hearing test.

Brown bakelite conversation tube with funnel connected to tube with string. The funnel is screwed to the base of the tube. String is unraveled. Tube is covered with brown fabric.

One set of a simplex hearing tube as designed by Max A. Goldstein for use in the school.

Conversation tube with dark green vulcanite mouthpiece and earpiece. Rubber tubing is thick, one inch, covered with tightly woven black material.

Black metal conversation tube with metal mouthpiece and earpiece. Mouthpiece is bell shaped. Rubber tubing is thick, 1 inch, covered with tightly woven black material.