Ithaca Stringed Instruments (ISI) sells custom guitars made by Eric and Jordan Aceto, including the Oneida line of acoustic-electrics used by Martin Simpson and David Torn. Eric Aceto co-owned for Ithaca Guitar Works from 1981 until he left in 1995 (alongside Dan Hoffman) to form ISI. Hoffman himself left ISI in 2000 to pursue guitar & violin making in Spain. Eric was joined in ISI by his son Jordan and they currently make violins, violas, cellos, mandolins and custom guitars

Source: Ithaca Stringed Instruments website

Source: Ithaca Guitar works website