Regarding my earlier posting in which I had mentioned a firm in Lansing,
Michigan, but could not remember the particulars.  Tom Grace's listing
gives the White Blower Mfg. Co.  That's the one I couldn't recall.
Several people in the organ business I know have used their products
and recommend them highly.  I believe one of their units powers the RAS
Gavioli in Baraboo, Wisconsin, as well.