Here are some of the esoteric coin-op piano and orchestrion ads
I am seeking.  Most are rather obscure, and some may have never
issued catalogs, but am giving it a college try!

Dave Bowers

- Ariston (any ads or flyers with pix)

- Armstrong (any ads)

- Automatic Musical Co. Binghamton, New York; Pictures of anything
  except "Reliable" endless-roll piano and Automatic Xylophone.

- Berry-Wood, any early pix except endless roll (with mechanism behind
  keyboard).  I have the color catalog from circa 1912.

- Caille arcade machines, any pix of arcade with a coin piano visible.

- Carleton and Price & Teeple. Any cat or advert in _color._

- Chicago Electric.  Any cat or advert in _color._

- Cote (Fall River, Mass.)  Anything mentioning coin-op.

- Eberhardt (any ads or flyers with pix)

- Electra Film-Player, Columbus, Ohio

- Electratone / Waltham, anything mentioning coin-op.

- Electrova, Jacob Doll & Sons

- Fort Plain Electric Piano Co., anything mentioning coin-op.

- Harwood, Trademark owned by J.W. Jenkins' Sons Music Co. Kansas City

- Howard; Howard "A" roll pianos made by the Baldwin Piano Co.

- Jewett, anything mentioning coin-op.

- Johnson, E.P., E.P. Johnson Co. of Champaign, Illinois, anything
  mentioning coin-op.

- Johnson, H.G., H.G. Johnson Quality Electric, anything mentioning
  coin-op.

- Johnson, W.A., William A. Johnson Piano Co. of Champaign, Illinois,
  anything mentioning coin-op.

- Kibbey, H.C. Anything pix

- Kreiter, anything mentioning coin-op.

- Le Roy, Le Roy Piano & Organ Co. of Sheboygan, Michigan; anything
  mentioning coin-op.

- Lehr; anything mentioning coin-op.

- Link; Info about Style O, any early styles except Style R and those
  illustrated in Player Piano Treasury.

- Louisville Organ and Orchestrion Co.

- Lyon & Healy; anything with Empress Electric, Majestic, etc.

- Marquette Piano Co., Style M3 photoplayer

- Mills; any ads or sheets in color showing instruments except Double
  Mills (I have).  Any arcade pix with an obvious piano.

- Monarch Musical Instrument Company, Tonawanda, New York

- Monarch Piano Company of Chicago; anything mentioning coin-op.

- National Automatic Music Co. / National Piano Manufacturing Co.,
  Grand Rapids, Michigan; anything mentioning coin-op.

- National Piano Player Co., Oregon, Illinois;  I have only one tiny
  ad with no picture!

- Niagara Musical Instrument Manufacturing Co., North Tonawanda, New
  York; catalogue and ads with pictures

- North Tonawanda Musical Instrument Works; any cats or sheets in color.

- Otto, F.G. Otto & Sons, Pianette piano.

- Pianova, Newark, New Jersey; any pix

- Regal; anything except 44-note upright cabinet player.

- Regina; Coin-op Regina piano, anything.

- Resotone Grand; The Resotone Grand Co., of New York, anything

- Rhapsodist, anything with pictures

- Standard Piano Player Co., Oregon Illinois; Anything with pictures
  or extensive text.

- Symphony Player Co., Covington, Kentucky; any pictures

- Van Roll Musical Instrument Co., North Tonawanda