button accordion
button accordion is a squeezebox or accordion.
Also recorded as box; button box; button-key accordion; squeezebox.
Overview
Type of accordion without piano-style keyboard.
In detail
button accordion is a squeezebox or accordion.
Sources
Each source is named with the standing the house places on it, so the evidence can be weighed rather than taken on trust.
reference work · Reputable secondary · Wikipedia
“Button accordion”, English Wikipedia, consulted as further reading
Consult the sourcereference work · Reputable secondary · Wikidata
Wikidata, structured authority record Q1421815: button accordion
Consult the source