Hi!
Today I was offered a scrap Gason of Kentish Town upright piano with wonderful inlay . . . and I have not space . . .
And then searching for Kentish Town I found a whole wealth of information and a collection which should actually be part of public archives and funded as such - http://pianogen.org/our.html
Of relevance, however, to organs is that some way down the page
http://pianogen.org/genealogy.html
is a photo of a piano supplied by F H Browne of Deal in Kent . . . the organ builder.
Best wishes
David P