 Their joint business came to an end in 1958, and Dowd established a workshop in Cambridge, Massachusetts along historical lines, producing around twenty instruments a year until 1988.From 1971 to 1985, there was a workshop in Paris under his name producing a similar number of instruments, which he ran with Reinhard von Nagel.His favoured models were two-manual harpsichords based on the French instruments of Blanchet and Taskin, including Ruckers harpsichords adapted by the "grand ravalement" process.