Category:Coinola orchestrion rolls
References
- Q. David Bowers (1972) "Operators' Piano Company" in Encyclopedia of Automatic Musical Instruments (reprint, reissue ed.), Vestal Press, p. 542 ISBN: 978-0-911572-08-7. "The Operators' Piano Company of Chicago was a leading force in the mechanical musical field from about 1904 to the mid-1930's. This firm produced a wide variety of coin operated pianos and orchestrions which were sold under the “Coinola” name. These instruments ranged from ... "
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